0 Department of Physics, University College, The University of New South Wales, Australian Defence Force Academy, Canberra, ACT 2600, Australia Department of Physics, University College, The University of New South Wales, Australian Defence Force Academy, Canberra, ACT 2600, Australia 1 The Director, University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL The Director, University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL 2 Nuffield Radio Astronomy Laboratories, Jodrell Bank, Chesire, UK Nuffield Radio Astronomy Laboratories, Jodrell Bank, Chesire, UK 3 University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Cheshire SK11 9DL University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Cheshire SK11 9DL The University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Cheshire SK11 9DL, UK University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield SK11 9DL 4 University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK University of Manchester Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield Cheshire SK11 9DL, UK University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester, Nuffield Radio AstronomyLaboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL 5 Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL Nuffield Radio Asronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK 6 Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL 7 University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL The University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester, Jodrell Bank, Macclesfield, Cheshire SK11 9DL University of Manchester, NRAL, Jodrell Bank, Macclesfield, Cheshire SK11 9DL, UK 8 Kiel, Neue Universitat, Institut fur theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Neue Universitat, Institut fur theoretische Physik und Sternwarte, Kiel, West Germany Kiel, Neue Universit t, Institut f r theoretische Physik und Sternwarte, Kiel, West Germany 9 Commissariat a l'Energie Atomique, Service d'Astrophysique, Gif-sur-Yvette, Essonne, France Commissariat al'Energie Atomique, Service d'Astrophysique, Gif-sur-Yvette, Essonne, France Commissariat a l'Energie Atomique, Section d'Astrophysique, Gif-sur-Yvette, Essonne, France Commissariat al'Energie Atomique, Section d'Astrophysique, Gif-sur-Yvette, Essonne, France Commissariat a l'Energie Atomique, Service d'Astrophysique, Gir-sur-Yvette, Essonne, France Commissariat a l'Energie Atomique, Service d'Astrophysique, Gif-sur-Yvette, Essonne, France 10 Osservatorio Astrofisico di Arcetri, Largo E.Fermi 5, 50125 Firenze, Italy Osservatorio Astrofisico di Arcetri, Largo E Fermi 5, 50125 Firenze, Italy Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Florence, Italy Osservatorio Astrofisico di Arcetri, Largo E.Fermi 5, 50125 Firenze, Italy Osservatorio Astrofisico di Arcetri, Largo E Fermi 5, 50125 Firenze, Italy Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Florence, Italy Osservatorio Astrofisico di Arcetri, Largo E.Fermi 5, 50125 Firenze, Italy Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125, Firenze, Italy Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy 11 China University of Science and Technology, Hefei, People's Republic of China China University of Science and Technology, Hefei, People's Republic of China China University of Science and Technology, Hefei, People's Republic of China 12 Edinburgh, Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia Edinburgh, Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia Edinburgh, Royal Observatory, U. K. Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia Edinburgh Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia Edinburgh, Royal Observatory, UK Schmidt Telescope Unit, Coonabarabran, New South Wales, Australia 13 Institut de Biologie Physico-Chimique, Paris, France Institut de Biologie Physico-Chimique, Paris, France 14 Ecole Polytechnique, Palaiseau, Essonne Ecole Polytechnique, Palaiseau, Essonne 15 Centro de Investigacion de Astronomia, Merida, Venezuela Centro de Investigacion de Astronomia, Merida, Venezuela Centro de Investigaciones de Astronomia, Merida, Venezuela 16 National Optical Astronomy Observatories, PO Box 26732, Tucson, AZ 85726, USA National Optical Astronomy Observatories, PO Box 26732, Tucson, AZ 85726, USA 17 Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo, HI 96720, USA Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo, HI 96720, USA Joint Astronomy Centre, 660 N. A'ohoku Place, University Park, Hilo, HI 96720, USA Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo, Hawaii 96720, USA Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo HI96720, USA 18 Instituto Nacional de Pesquisas Espaciais (INPE), Sao Jose dos Campos, SP, B Instituto Nacional de Pesquisas Espaciais (INPE), Sao Jose dos Campos, SP, B 19 Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA 20 National Center for Atmospheric Research, Boulder, CO, US National Center for Atmospheric Research, Boulder, CO, US 21 NASA, Goddard Space Flight Center, Theoretical Studies Group, Greenbelt, Md. NASA, Goddard Space Flight Center, Theoretical Studies Group, Greenbelt, Md. 22 NASA, Ames Research Center, Theoretical Studies Branch, Moffett Field, Calif. NASA, Ames Research Center, Theoretical Studies Branch, Moffett Field, Calif. 23 Science Research Council, Rutherford and Appleton Laboratories, Slough, Bucks., England Science Research Council, Rutherford and Appleton Laboratories, Slough, Berks., England Science Research Council, Rutherford and Appleton Laboratories, Slough, Bucks., England 24 Dominion Radio Astrophysical Observatory, Penticton, British Columbia, Canada Dominion Radio Astrophysical Observatory, Penticton, British Columbia, Canada Dominion Radio Astrophysical Observatory, Victoria, British Columbia, Canada Dominion Radio Astrophysical Observatory, Penticon, British Columbia, Canada 25 Inter-Univ. Centre for Astronomy and Astrophysics, Pune, India Inter-Univ. Centre for Astronomy and Astrophysics, Pune, India Inter-Univ. Centre for Astronomy and Astrophysics, Pune, India 26 Frankfurt, Universitaet, Frankfurt am Main, West Germany Frankfurt, Universitaet, Frankfurt am Main, West Germany Frankfurt, Universitaet, Frankfurt-am-Main, West Germany 27 South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape Town, South Africa South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape Town, South Africa South African Astronomical Observatory, PO Box 0, Observatory 7935, Cape Town, South Africa 28 Space Telescope European Coordinating Facility, Garching, Federal Republic of Germany Space Telescope European Coordinating Facility, Garching, Federal Republic of Germany Space Telescope - European Coordinating Facility, Garching, Federal Republic of Germany 29 Atmospheric and Environmental Research, Inc., Cambridge, Mass. Atmospheric and Environmental Research, Inc., Cambridge, Mass. 30 Science and Engineering Research Council, Rutherford and Appleton Laboratory, Didcot, Oxon, England Science and Engineering Research Council, Rutherford and Appleton Laboratories, Didcot, Oxon, England Science and Engineering Research Council, Rutherford and Appleton Laboratory, Didcot, Oxon, England Science and Engineering Research Council, Rutherford Appleton Laboratories, Didcot, Oxon, England Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon., England 31 Science Research Council, Rutherford and Appleton Laboratories, Didcot, Oxon, England Science Research Council, Rutherford and Appleton Laboratories, Didcot, Oxon, England 32 Science Research Council, Space and Astrophysics Div., Didcot, Oxon, England Science Research Council, Space and Astrophysics Div., Didcot, Oxon, England 33 Science Research Council, Appleton Laboratory, Slough, Berks., England Science Research Council, Appleton Laboratory, Slough, Bucks., England Science Research Council, Appleton Laboratory, Slough, Berks., England 34 Atomic Energy Research Establishment, Culham Laboratory, Abingdon, Oxon, England Atomic Energy Research Establishment, Culham Laboratory, Abingdon, Oxon, England 35 Frankfurt Univ., Frankfurt am Main, Germany Frankfurt Univ., Frankfurt am Main, Germany 36 Athens, National University, Athens, Greece Athens, National University, Athens, Greece 37 Univ.of Massachusetts, Amherst, MA, US Univ.of Massachusetts, Amherst, MA, US 38 Case Western Reserve Univ., Cleveland, OH, US Case Western Reserve Univ., Cleveland, OH, US 39 Lausanne Univ., Chavanne-des-Bois, Switzerland Lausanne Univ., Chavannes-des-Bois, Switzerland Lausanne, Univ., Chavannes-des-Bois, Switzerland Lausanne Univ., Chavanne-des-Bois, Switzerland 40 Bordeaux I, Univ., Observatoire, Floirac, France Bordeaux I, Univ., Observatoire, Floirac, France 41 Berlin, Technische Universitaet, Berlin Berlin, Technische Universitaet, Berlin 42 Multiple Mirror Telescope Observatory, Tucson, AZ, US Multiple Mirror Telescope Observatory, Tucson, AZ, US 43 Nuffield Radio Astronomy Laboratory, Cheshire, UK Nuffield Radio Astronomy Laboratory, Cheshire, UK Nuffield Radio Astronomy Laboratories, Cheshire, UK 44 University of Deleware, Newark, DE, US University of Deleware, Newark, DE, US 45 NOAA Space Environment Laboratory, Boulder, CO, US NOAA Space Environment Laboratory, Boulder, CO, US 46 University of New Hampshire, Durham, NH, US University of New Hampshire, Durham, NH, US 47 New South Wales Univ., Kensington, Australia New South Wales Univ., Kensington, Australia 48 Inst. fuer Kosmosforschung, Berlin, Germany Inst. fuer Kosmosforschung, Berlin, Germany 49 University of California, Santa Cruz, CA, US University of California, Santa Cruz, CA, US 50 Wroclaw, Uniwersytet, Obserwatorium, Wroclaw, Poland Wroclaw, Uniwersytet, Obserwatorium, Wroclaw, Poland 51 Mount John University Observatory Mount John University Observatory 52 Tohoku Gakuin University, Sendai, Japan Tohoku Gakuin University, Sendai, Japan 53 Computer Sciences Corp., Silver Spring, MD Computer Sciences Corp., Silver Spring, MD Computer Science Corp., Silver Spring, MD 54 U.S. Navy, Laboratory for Cosmic Ray Physics, Washington, DC U.S. Navy, Laboratory for Cosmic Ray Physics, Washington, DC U.S. Navy, Laboratory for Cosmic Ray Physics, Washington, D.C. 55 National Bureau of Standards, Washington, DC National Bureau of Standards, Washington, DC 56 Keele, University, Keele, Staffs., England Keele, University, Keele, Staffs., England 57 Hachioji Technical High School, Japan Hachioji Technical High School, Japan 58 City Polytechnic of Hong Kong, Kowloon City Polytechnic of Hong Kong, Kowloon 59 Western Connecticut State University, Danbury Western Connecticut State University, Danbury 60 Space Research Institute, Moscow, Russia Space Research Institute, Moscow, Russia 61 Huazhong Normal University, Hubei, China Huazhong Normal University, Hubei, China 62 Pisa, Scuola Normale Superiore, Italy Pisa, Scuola Normale Superiore, Italy 63 Societat Catalana de Fisica, Spain Societat Catalana de Fisica, Spain 64 National Central Univ., Chungli, Taiwan National Central Univ., Chungli, Taiwan 65 Onsala Space Observatory, Onsala Onsala Space Observatory, Onsala 66 Planetary Science Institute, Pasadena, CA Planetary Science Institute, Pasadena, CA 67 Seoul National Univ., Seoul, Korea Seoul National Univ., Seoul, Korea 68 N. Copernicus Univ., Torun, Poland N. Copernicus Univ., Torun, Poland 69 Max-Planck-Institute, Garching, Germany Max-Planck-Institute, Garching, Germany 70 Raman Research Institute, Bangalore, India Raman Research Institute, Bangalore, India 71 NASA, Infrared Telescope Facility, Mauna Kea, HI NASA, Infrared Telescope Facility, Mauna Kea, HI 72 Computational Physics, Inc., Fairfax, VA Computational Physics, Inc., Fairfax, VA 73 NASA, Marshall Space Flight Center, Space Science Laboratory, Huntsville, AL NASA, Marshall Space Flight Center, Space Science Laboratory, Huntsville, AL NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville, Ala. NASA, Marshall Space Flight Center, Space Sciences Laboratory, Huntsville, AL NASA, Marshall Space Flight Center, Space Science Laboratory, Huntsville, Ala. 74 Physical Research Lab., Ahmedabad, India Physical Research Lab., Ahmedabad, India 75 Katholieke Univ. Leuven, Heverlee, Belgium Katholieke Univ. Leuven, Heverlee, Belgium 76 Sterrenkundig Observatorium, Ghent, Belgium Sterrenkundig Observatorium, Ghent, Belgium 77 Anglo-Australian Observatory, Australia Anglo-Australian Observatory, Australia 78 Nagoya Univ., Nagoya, Aichi, Japan Nagoya Univ., Nagoya, Aichi, Japan 79 National Central Univ., Taiwan National Central Univ., Taiwan 80 Beijing Normal University, People's Republic of China Beijing Normal University, People's Republic of China Tianjin Normal University, People's Republic of China Nanjing Normal University, People's Republic of China 81 Tokyo Gakugei Univ., Tokyo, Japan Tokyo Gakugei Univ., Tokyo, Japan 82 USAF, Weapons Laboratory, Kirtland AFB, NM USAF, Weapons Laboratory, Kirtland AFB, NM 83 Clyde W. Tombaugh Observatory, Lawrence, KS Clyde W. Tombaugh Observatory, Lawrence, KS 84 Arecibo Observatory, Arecibo, P.R. Arecibo Observatory, Arecibo, P.R. 85 Zielona Gora Astronomical Center, Poland Zielona Gora Astronomical Center, Poland 86 Waseda Univ., Shinjuku, Tokyo, Japan Waseda Univ., Shinjuku, Tokyo, Japan 87 Univ. de Mons-Hainaut, Mons, Belgium Univ. de Mons-Hainaut, Mons, Belgium 88 Strasbourg, Observatoire Astronomique, France Strasbourg, Observatoire Astronomique, France 89 P.N. Lebedev Physical Institute, Moscow, Russia P.N. Lebedev Physical Institute, Moscow, Russia 90 Lausanne, Universite, Chavannes-des-Bois Lausanne, Universite, Chavannes-des-Bois 91 Smith College, Northampton, MA, US Smith College, Northampton, MA, US 92 Benedictine College, Atchison, KS Benedictine College, Atchison, KS 93 Titan Systems, Inc., San Diego, CA Titan Systems, Inc., San Diego, CA 94 Brigham Young University, Provo, Utah, US Brigham Young University, Provo, Utah, US Brigham Young University, Provo, UT, US 95 New Mexico State Univ., Las Cruces, NM, US New Mexico State Univ., Las Cruces, NM, US 96 Pontificia Univ. Catolica de Chile, Santiago Pontificia Univ. Catolica de Chile, Santiago 97 New York State Univ., Stony Brook New York State Univ., Stony Brook New York State Univ., Stony Brook 98 Berkeley Research Associates Berkeley Research Associates 99 Astrophysics, Keble Road, Oxford OX1 3RH Astrophysics, Keble Road, Oxford OX1 3RH 100 Goethe-Univ., Frankfurt am Main, Germany Goethe-Univ., Frankfurt am Main, Germany 101 Geneve, Observatoire, Chavannes-des-Bois, Switzerland Geneve, Observatoire, Chavannes-des-Bois, Switzerland 102 Nicolaus Copernicus University, Torun, Poland Nicolaus Copernicus University, Torun, Poland 103 Universite Paris 11, Orsay, France Universite Paris 11, Orsay, France Universite Paris XI, Orsay, France Universite Paris 11, Orsay, France Universite Paris XI, Orsay, France 104 Max-Planck-Institut fuer Physik und Astrophysik, Garching Max-Planck-Institut fuer Physik und Astrophysik, Garching 105 Arcetri, Osservatorio Astrofisico, Arcetri, Italy Arcetri, Osservatorio Astrofisico, Arcetri, Italy 106 Flower and Cook Observatory Flower and Cook Observatory 107 Asiago and Ekar Observatories, Italy Asiago and Ekar Observatories, Italy 108 Florida International University, Miami Florida International University, Miami 109 Univ. of Alabama, Huntsville, AL, US Univ. of Alabama, Huntsville, AL, US 110 London, University, Observatory, Mill Hill, Middx., England London, University, Observatory, Mill Hill, Middx., England 111 George Mason University, Fairfax, Va. George Mason University, Fairfax, Va. 112 Ben Gurion Univ., Beer Sheva, Israel Ben Gurion Univ., Beer Sheva, Israel 113 University of St. Andrews, Fife, UK University of St. Andrews, Fife, UK 114 Beograd, Univerzitet, Belgrade, Yugoslavia Beograd, Univerzitet, Belgrade, Yugoslavia 115 Corralitos Observatory, Las Cruces, NM Corralitos Observatory, Las Cruces, NM 116 Maria Mitchell Observatory, Nantucket, MA Maria Mitchell Observatory, Nantucket, MA 117 Turku Univ. Observatory, Piikkio, Finland Turku Univ. Observatory, Piikkio, Finland 118 Warsaw Univ. Observatory, Poland, UK Warsaw Univ. Observatory, Poland, UK 119 Goethe Link Observatory, Bloomington, Ind. Goethe Link Observatory, Bloomington, Ind. 120 Braeside Observatory, Flagstaff, AZ Braeside Observatory, Flagstaff, AZ 121 Mount Hopkins Observatory, Amado, Ariz. Mount Hopkins Observatory, Amado, Ariz. 122 J. I. Holcomb Observatory, Indianapolis, IN J. I. Holcomb Observatory, Indianapolis, IN 123 Strasbourg, Observatoire Astronomique Strasbourg, Observatoire Astronomique 124 Erwin W. Fick Observatory, Ames, IA Erwin W. Fick Observatory, Ames, IA 125 MIT, Lincoln Laboratory, Lexington, Mass. MIT, Lincoln Laboratory, Lexington, Mass. 126 Cloudcroft Observatory, Cloudcroft, NM Cloudcroft Observatory, Cloudcroft, NM 127 van Vleck Observatory, Middletown, CT van Vleck Observatory, Middletown, CT Van Vleck Observatory, Middletown, CT 128 McDonald Observatory, Fort Davis, Tex. McDonald Observatory, Fort Davis, Tex. 129 Northern Arizona Univ., Flagstaff, AZ Northern Arizona Univ., Flagstaff, AZ 130 Univ. College, Belfield, Dublin, Ireland Univ. College, Belfield, Dublin, Ireland 131 Interferometrics, Inc., Vienna, VA Interferometrics, Inc., Vienna, VA 132 Munich Univ., Scheinerstrasse, Munich, Germany Munich Univ., Scheinerstrasse, Munich, Germany 133 St. Andrews, University Observatory, Scotland St. Andrews, University Observatory, Scotland 134 Univ. of Maryland, College Park, MD, US Univ. of Maryland, College Park, MD, US 135 NBS, Time and Frequency Div., Boulder, CO NBS, Time and Frequency Div., Boulder, CO 136 Middle East Technical Univ., Ankara, Turkey Middle East Technical Univ., Ankara, Turkey 137 Univ. of Manchester, Manchester, UK Univ. of Manchester, Manchester, UK 138 CCAST (World Laboratory), Beijing, China CCAST (World Laboratory), Beijing, China 139 U.S. Naval Observatory, Flagstaff, AZ, US U.S. Naval Observatory, Flagstaff, AZ, US 140 Astronomical Observatory, Belgrade, Yugoslavia Astronomical Observatory, Belgrade, Yugoslavia 141 State Astronomical Inst., Moscow, Russia State Astronomical Inst., Moscow, Russia 142 Ecole Polytechnique, Palaiseau, Essonne, France Ecole Polytechnique, Palaiseau, Essonne, France 143 SRON, Laboratorium voor Ruimteonderzoek, Utrecht SRON, Laboratorium voor Ruimteonderzoek, Utrecht 144 Lockheed Palo Alto Research Lab., Palo Alto, CA, US Lockheed Palo Alto Research Lab., Palo Alto, CA, US 145 Ball Corp., Ball Aerospace Systems Div., Boulder, CO Ball Corp., Ball Aerospace Systems Div., Boulder, CO 146 China Center for Advanced Science and Technology China Center for Advanced Science and Technology 147 U.K. Infrared Telescope Unit, Hilo, HI U.K. Infrared Telescope Unit, Hilo, HI 148 Societat Catalana de Fisica, Barcelona Societat Catalana de Fisica, Barcelona 149 CERN, 1211 Geneva 23, Switzerland CERN, 1211 Geneva 23, Switzerland 150 CSIRO, Epping, NSW, Australia CSIRO, Epping, NSW, Australia 151 Randolph-Macon College, Ashland, VA Randolph-Macon College, Ashland, VA 152 Florida International Univ., Miami Florida International Univ., Miami 153 INPE, Sao Jose dos Campos, Brazil INPE, Sao Jose dos Campos, Brazil 154 Zagreb, Sveuciliste, Yugoslavia Zagreb, Sveuciliste, Yugoslavia 155 CNRS URA 336, Paris, France CNRS URA 336, Paris, France 156 Sternwarte Sonneberg, Sonneberg, Germany Sternwarte Sonneberg, Sonneberg, Germany 157 Ecole Normale Superieure de Jeunes Filles Ecole Normale Superieure de Jeunes Filles 158 Astrofisico di Arcetri, Firenze, Italy Astrofisico di Arcetri, Firenze, Italy 159 Erindale College, Missisauga, Canada Erindale College, Missisauga, Canada Erindale College, Mississauga, Canada 160 University of Bern, Bern, Switzerland University of Bern, Bern, Switzerland 161 Lawrence Berkeley Laboratory Lawrence Berkeley Laboratory 162 Tel Aviv Univ., Ramat Aviv, Israel Tel Aviv Univ., Ramat Aviv, Israel 163 Tohoku Univ., Aoba-ku, Sendai, Japan Tohoku Univ., Aoba-ku, Sendai, Japan 164 Basilicata, Univ., Potenza, Italy Basilicata, Univ., Potenza, Italy 165 Univ. Heidelberg, Heidelberg, Germany Univ. Heidelberg, Heidelberg, Germany 166 Colorado College, Colorado Springs Colorado College, Colorado Springs 167 Hampshire College, Amherst, Mass. Hampshire College, Amherst, Mass. 168 Union College, Schenectady, NY Union College, Schenectady, NY 169 IRAM, St. Martin d'Heres, France IRAM, St. Martin d'Heres, France 170 Leiden, Rijksuniversiteit, Sterrewacht Leiden, Rijksuniversiteit, Sterrewacht 171 Eotvos Lorand Tudomanyegyetem, Budapest, Hungary Eotvos Lorand Tudomanyegyetem, Budapest, Hungary 172 Northwestern University, Evanston, Illinois, US Northwestern University, Evanston, Illinois, US 173 SRON, Space Research Laboratory, Utrecht, Netherlands SRON, Space Research Laboratory, Utrecht, Netherlands 174 C. E. Kenneth Mees Observatory, NY C. E. Kenneth Mees Observatory, NY 175 Helsinki Univ. Observatory, Finland Helsinki Univ. Observatory, Finland 176 Purdue University, West Lafayette, IN Purdue University, West Lafayette, IN 177 C. E. Kenneth Mees Observatory, Rochester, N.Y. C. E. Kenneth Mees Observatory, Rochester, N.Y. 178 Grenoble, Observatoire, Saint-Martin-d'Heres, France Grenoble, Observatoire, Saint-Martin-d'Heres, France 179 Uttar Pradesh State Observatory, Naintal, India Uttar Pradesh State Observatory, Naintal, India Uttar Pradesh State Observatory, Naini Tal, India 180 Strasbourg, Observatoire, Strasbourg, France Strasbourg, Observatoire, Strasbourg, France 181 Warsaw Univ. Observatory, Warszawa, Poland Warsaw Univ. Observatory, Warszawa, Poland 182 Copenhagen Univ. Observatory, Denmark Copenhagen Univ. Observatory, Denmark Copenhagen Univ., Observatory, Denmark 183 Beijing Observatory, Beijing, People's Republic of China Beijing Observatory, Beijing, People's Republic of China 184 ESA, Astrophysics Div., Noordwijk, Netherlands ESA, Astrophysics Div., Noordwijk, Netherlands ESTEC, Astrophysics Div., Noordwijk, Netherlands 185 Bordeaux, Observatoire, Floirac, France Bordeaux, Observatoire, Floirac, France 186 Perkins Observatory, Columbus, Ohio Perkins Observatory, Columbus, Ohio 187 Dublin Inst. for Advanced Studies, Ireland Dublin Inst. for Advanced Studies, Ireland 188 CNRS, Verrieres le Buisso, France CNRS, Verrieres le Buisso, France 189 Hitotsubashi Univ., Kunitachi, Japan Hitotsubashi Univ., Kunitachi, Japan 190 Wellesley College, Wellesley, Mass. Wellesley College, Wellesley, Mass. 191 Univ. of New Hampshire, Durham, NH, US Univ. of New Hampshire, Durham, NH, US 192 Multiple Mirror Telescope Observatory Multiple Mirror Telescope Observatory 193 Forskningsinstitutet for Atomfysik Forskningsinstitutet for Atomfysik 194 RE 3, B 1180 BRUXELLES, BELGIQUE RE 3, B 1180 BRUXELLES, BELGIQUE 195 Thomas Moore College, Fort Mitchell, Ky. Thomas Moore College, Fort Mitchell, Ky. Thomas More College, Fort Mitchell, Ky. 196 BUREAU DES LONGITUDES, PARIS, FRANCE BUREAU DES LONGITUDES, PARIS, FRANCE 197 USAF, Phillips Lab., Hanscom AFB, MA USAF, Phillips Lab., Hanscom AFB, MA 198 NOAA, Space Environment Laboratory, Boulder NOAA, Space Environment Laboratory, Boulder 199 SRON, Laboratorium voor Ruimteonderzoek SRON, Laboratorium voor Ruimteonderzoek 200 Pisa, Scuola Normale Superiore, Pisa, Italy Pisa, Scuola Normale Superiore, Pisa, Italy 201 Hatfield Polytechnic, Hatfield, England Hatfield Polytechnic, Hatfield, England 202 Science Systems, Ltd., Bristol, England Science Systems, Ltd., Bristol, England 203 CSIC, Centre d'Estudis Avancats, Blanes CSIC, Centre d'Estudis Avancats, Blanes 204 NIST, Time and Frequency Div., Boulder, CO NIST, Time and Frequency Div., Boulder, CO 205 Ecole Normale Superieure, Paris, France Ecole Normale Superieure, Paris, France 206 Missouri-St. Louis, University, MO Missouri-St. Louis, University, MO 207 South Florida Univ., Tampa, FL South Florida Univ., Tampa, FL 208 CNPq, Departamento de Astronomia CNPq, Departamento de Astronomia 209 National Bureau of Standards, Boulder, CO National Bureau of Standards, Boulder, CO 210 Univ. of Central Lancashire, Preston, UK Univ. of Central Lancashire, Preston, UK 211 Univ. Pierre et Marie Curie, Paris, France Univ. Pierre et Marie Curie, Paris, France 212 Univ. Paris XI, Orsay Cedex, France Univ. Paris XI, Orsay Cedex, France 213 Royal Observatory, Blackford Hill, Edinburgh, UK Royal Observatory, Blackford Hill, Edinburgh, UK 214 NASA/Fermi National Accelerator Laboratory, Batavia NASA/Fermi National Accelerator Laboratory, Batavia 215 New Mexico St. Univ., Las Cruces, NM, US New Mexico St. Univ., Las Cruces, NM, US 216 SRON, Laboratory for Space Research, Utrecht, Netherlands SRON, Laboratory for Space Research, Utrecht, Netherlands 217 Chungbuk National University, Republic of Korea Chungbuk National University, Republic of Korea 218 San Diego State Univ., San Diego, CA, US San Diego State Univ., San Diego, CA, US 219 AN SSSR, Institut Prikladnoi Fiziki, Gorki, USSR AN SSSR, Institut Prikladnoi Fiziki, Gorki, USSR 220 Osaka University of Education, Japan Osaka University of Education, Japan 221 Tokyo Metropolitan University, Hachioji, Japan Tokyo Metropolitan University, Hachioji, Japan 222 Northern Arizona University, Flagstaff, AZ Northern Arizona University, Flagstaff, AZ 223 Smithsonian Institution, Washington, DC, US Smithsonian Institution, Washington, DC, US 224 Indiana University, Bloomington, Indiana, US Indiana University, Bloomington, Indiana, US 225 Helsinki Univ. of Technology, Kylmala, Finland Helsinki Univ. of Technology, Kylmala, Finland 226 Collurania Astronomical Observatory, Teramo, Italy Collurania Astronomical Observatory, Teramo, Italy 227 Osservatorio 'Tito Lucrezio Caro', Bologna, Italy Osservatorio 'Tito Lucrezio Caro', Bologna, Italy 228 CNRS, Laboratoire Rene Bernas, Orsay, France CNRS, Laboratoire Rene Bernas, Orsay, France 229 Torino, Politecnico, Turin, Italy Torino, Politecnico, Turin, Italy 230 IBM Scientific Center, Palo Alto, CA IBM Scientific Center, Palo Alto, CA 231 Universitat Politecnica de Catalunya, Barcelona, Spain Universitat Politecnica de Catalunya, Barcelona, Spain 232 Observatoire de Calern, Saint-Vallier-de-Thiey, France Observatoire du Calern, Saint-Vallier-de-Thiey, France Observatoire de Calern, Saint-Vallier-de-Thiey, France Observatoire de Calern, Saint-Vallier de Thiey, France 233 The Institute of Physics and Chemical Research, Saitama, Japan The Institute of Physics and Chemical Research, Saitama, Japan 234 Instituto de Pesquisas Espaciais, Sao Josedos Campos, Brazil Instituto de Pesquisas Espaciais, Sao Josedos Campos, Brazil Instituto de Pesquisas Espaciais, Sao Jose dos Campos, Brazil 235 Istituto Nazionale di Fisica Nucleare, Padua Istituto Nazionale di Fisica Nucleare, Padua 236 NASA, Johnson Space Center, Houston, TX NASA, Johnson Space Center, Houston, TX 237 Univ. of Massachussets, Amherst, MA, US Univ. of Massachussets, Amherst, MA, US 238 Utrecht, Sterrekundig Instituut, Utrecht, Netherlands Utrecht, Sterrekundig Instituut, Utrecht, Netherlands 239 Kapteyn Astronomical Inst., Groningen, Netherlands Kapteyn Astronomical Inst., Groningen, Netherlands Kapetyn Astronomical Inst., Groningen, Netherlands 240 University of Maryland, College Park, Maryland, US University of Maryland, College Park, Maryland, US 241 Universtiy of California, Santa Cruz, California, US Universtiy of California, Santa Cruz, California, US 242 University of Wisconsin, Milwaukee, Wisconsin, US University of Wisconsin, Milwaukee, Wisconsin, US 243 Northern Arizona University, Flagstaff, AZ, US Northern Arizona University, Flagstaff, AZ, US 244 Sonnenobservatorium Kanzelhoehe, Sattendorf, Austria Sonnenobservatorium Kanzelhoehe, Sattendorf, Austria 245 University of Texas at Austin, Austin, TX, US University of Texas at Austin, Austin, TX, US 246 University of the Bosphorus, Istanbul, Turkey University of the Bosphorus, Istanbul, Turkey 247 Lockheed Missiles and Space Co., Inc., Palo Alto, CA Lockheed Missiles and Space Co., Inc., Palo Alto, CA 248 New South Wales, University, Kensington, Australia New South Wales, University, Kensington, Australia 249 Astrophysikalisches Institut, Potsdam, Germany Astrophysikalisches Institut, Potsdam, Germany 250 Scarborough College, West Hill, Ontario Scarborough College, West Hill, Ontario Scarborough College, Westhill, Ontario 251 Valencia, Universidad Politecnica, Burjasot, Spain Valencia, Universidad Politecnica, Burjasot, Spain Valencia, Universidad Politecnica, Burjasot, Spain 252 New Brunswick, University, Fredericton, Canada New Brunswick, University, Fredericton, Canada 253 University of Tasmania, Hobart, Australia University of Tasmania, Hobart, Australia 254 St. Andrews, University, St. Andrews, Scotland St. Andrews, University, St. Andrews, Scotland 255 Univ. de Nice Sophia Antipolis, Nice, France Univ. de Nice Sophia Antipolis, Nice, France 256 Universidade Federal Fluminense, Niteroi, Brazil Universidade Federal Fluminense, Niteroi, Brazil 257 Preston Polytechnic, Preston, Lancs., England Preston Polytechnic, Preston, Lancs., England 258 The Queen's University of Belfast, Belfast, UK The Queen's University of Belfast, Belfast, UK The Queens's University of Belfast, Belfast, UK 259 Inst. of Theoretical Astrophysics, Oslo, Norway Inst. of Theoretical Astrophysics, Oslo, Norway 260 Center for High Energy Astrophysics, Netherlands Center for High Energy Astrophysics, Netherlands Centre for High Energy Astrophysics, Netherlands 261 Colorado, University, Colorado Springs, Colo. Colorado, University, Colorado Springs, Colo. 262 Owens Valley Radio Observatory, Big Pine, Calif. Owens Valley Radio Observatory, Big Pine, Calif. 263 Columbia University, New York, New York, US Columbia University, New York, New York, US 264 Catholic University of America, Washington, D.C. Catholic University of America, Washington, D.C. 265 Newcastle, University, Newcastle, Australia Newcastle, University, Newcastle, Australia 266 Czech Academy of Sciences, Ondrejov, Czech Republic Czech Academy of Sciences, Ondrejov, Czech Republic Czech Academy of Sciences, Sporilov, Czech Republic 267 Nanjing University, Nanjing, People's Republic of China Nanjing University, Nanjing, People's Republic of China 268 Huazhong Normal University, Wuhan, People's Republic of China Huazhong Normal University, Wuhan, People's Republic of China 269 Yonsei University Observatory, Seoul, Republic of Korea Yonsei University Observatory, Seoul, Republic of Korea 270 Netherlands Foundation for Research in Astronomy, Dwingeloo Netherlands Foundation for Research in Astronomy, Dwingeloo 271 International Centre for Relativistic Astrophysics International Centre for Relativistic Astrophysics 272 Computer Sciences Corp., El Segundo, CA Computer Sciences Corp., El Segundo, CA 273 AN SSSR, Leningradskii Institut Iadernoi Fiziki, Gatchina, USSR AN SSSR, Leningradskii Institut Iadernoi Fiziki, Gatchina, USSR 274 CONICET, Instituto Argentino de Radioastronomia, Villa Elisa CONICET, Instituto Argentino de Radioastronomia, Villa Elisa 275 Royal Institute of Technology, Stockholm, Sweden Royal Institute of Technology, Stockholm, Sweden 276 AN SSSR, Fizicheskii Institut, Moscow, USSR AN SSSR, Fizicheskii Institut, Moscow, USSR 277 CNR, Gruppo Nazionale di Astronomia, Italy CNR, Gruppo Nazionale di Astronomia, Italy 278 Academia Romania, Bucarest, Romania Academia Romania, Bucarest, Romania 279 NASA/Fermilab Astrophysics Center, Batavia, IL NASA/Fermilab Astrophysics Center, Batavia, IL 280 Florida International Univ., Miami, FL, US Florida International Univ., Miami, FL, US 281 AN LSSR, Institut Fiziki, Vilnius, Lithuanian SSR AN LSSR, Institut Fiziki, Vilnius, Lithuanian SSR 282 Lunar and Planetary Institute, Houston, TX, US Lunar and Planetary Institute, Houston, TX, US Lunar and Planetary Institute, Houston, TX, US 283 Univ. Wisconsin-Madison, Madison, WI, US Univ. Wisconsin-Madison, Madison, WI, US 284 NASA, Infrared Telescope Facility, Hilo, HI NASA, Infrared Telescope Facility, Hilo, HI 285 Owens Valley Radio Observatory, Pasadena, CA Owens Valley Radio Observatory, Pasadena, CA 286 Computer Science Corporation, Lanham, MD, US Computer Science Corporation, Lanham, MD, US 287 Hong Kong, City Polytechnic, Hong Kong Hong Kong, City Polytechnic, Hong Kong 288 California State Univ., Northridge, CA, US California State Univ., Northridge, CA, US 289 Utah, University, Salt Lake City, UT Utah, University, Salt Lake City, UT 290 The University of Toledo, Toledo, OH, US The University of Toledo, Toledo, OH, US 291 Williams College, Williamstown, MA Williams College, Williamstown, MA 292 Stazione Astronomica, Cagliari, Italy Stazione Astronomica, Cagliari, Italy 293 Tennessee State Univ., Nashville, TN, US Tennessee State Univ., Nashville, TN, US 294 University of Rochester, Rochester, NY, US University of Rochester, Rochester, NY, US 295 State Univ. of New York, Stony Brook State Univ. of New York, Stony Brook 296 Polytechnic of Wales, Pontypridd Polytechnic of Wales, Pontypridd 297 Space Research Astronomical Observatory Space Research Astronomical Observatory 298 Roma, Osservatorio Astronomico, Monteporzio Roma, Osservatorio Astronomico, Monteporzio Roma, Osservatorio Astronomico, Monte Porzio 299 Bochum, Ruhr-Univ., Germany Bochum, Ruhr-Univ., Germany 300 Inst. d'Estudis Catalans, Spain Inst. d'Estudis Catalans, Spain 301 Max Planck Inst., Garching, Germany Max Planck Inst., Garching, Germany 302 Sternwarte Babelsberg, Potsdam Sternwarte Babelsberg, Potsdam 303 EG & G, Inc., Los Alamos, N. Mex. EG & G, Inc., Los Alamos, N. Mex. 304 Univ. de Lisboa, Lisboa, Portugal Univ. de Lisboa, Lisboa, Portugal 305 Aerospace Corp., El Segundo, Calif. Aerospace Corp., El Segundo, Calif. 306 Specola Vaticana, Vatican City Specola Vaticana, Vatican City 307 SETI Institute, Mountain View, CA SETI Institute, Mountain View, CA 308 USAF, Geophysics Laboratory USAF, Geophysics Laboratory 309 Armagh Planetarium, United Kingdom Armagh Planetarium, United Kingdom 310 Agnes Scott College, Decatur, GA Agnes Scott College, Decatur, GA 311 Yerevan Physics Inst., Armenia Yerevan Physics Inst., Armenia 312 Volgograd State Univ., Russia Volgograd State Univ., Russia 313 Phillips Lab., Hanscom AFB, MA, US Phillips Lab., Hanscom AFB, MA, US Phillips Lab., Hanscome AFB, MA, US 314 Saint John's College, Annapolis Saint John's College, Annapolis 315 Canisius College, Buffalo, NY Canisius College, Buffalo, NY 316 Owens Valley Radio Observatory, Pasadena, CA, US Owens Valley Radio Observatory, Pasadena, CA, US 317 Univ. of Adelaide, Adelaide, Australia Univ. of Adelaide, Adelaide, Australia 318 SRI International, Menlo Park, CA SRI International, Menlo Park, CA 319 Ball Aerospace Systems Group, Boulder, CO Ball Aerospace Systems Group, Boulder, CO 320 Lewis and Clark College, Portland, OR, US Lewis and Clark College, Portland, OR, US 321 NOAA, Space Environment Lab., Boulder NOAA, Space Environment Lab., Boulder 322 Evergreen State College, Olympia, WA Evergreen State College, Olympia, WA 323 University of Maryland, College Park, MD, US University of Maryland, College Park, MD, US 324 Univ. of New Mexico, Albuquerque, NM, US Univ. of New Mexico, Albuquerque, NM, US 325 Univ. Basel, Binningen, Switzerland Univ. Basel, Binningen, Switzerland 326 Titan Systems, Inc., La Jolla, CA Titan Systems, Inc., La Jolla, CA 327 CONICET, Buenos Aires, Argentina CONICET, Buenos Aires, Argentina 328 Mt. Stromlo and Siding Spring Observatory Mt. Stromlo and Siding Spring Observatory 329 J.I. Holcomb Observatory, Indianapolis, IN J.I. Holcomb Observatory, Indianapolis, IN 330 Hopkins Observatory, Williamstown, MA Hopkins Observatory, Williamstown, MA 331 Univ. College, Cardiff, United Kingdom Univ. College, Cardiff, United Kingdom 332 Lancashire Polytechnic, Preston Lancashire Polytechnic, Preston 333 Astronomical Institute, Bohemia, Czech Republic Astronomical Institute, Bohemia, Czech Republic 334 Univ. degli Studi di Milano, Milano, Italy Univ. degli Studi di Milano, Milano, Italy 335 C.E. Kenneth Mees Observatory, Rochester, NY C.E. Kenneth Mees Observatory, Rochester, NY C. E. Kenneth Mees Observatory, Rochester, NY 336 Bordeaux, Observatoire, Floriac, France Bordeaux, Observatoire, Floriac, France 337 Southwest Research Inst., San Antonio, TX, US Southwest Research Inst., San Antonio, TX, US 338 Univ. Jospeh Fourier, Grenoble, France Univ. Jospeh Fourier, Grenoble, France 339 University of Leicester, Leicester, UK University of Leicester, Leicester, UK 340 Max Planck Institute for Astrophysics Max Planck Institute for Astrophysics 341 New South Wales, University, Kensington New South Wales, University, Kensington 342 Purdue University, West Lafayette, Ind. Purdue University, West Lafayette, Ind. 343 Napfizikai Obszervatorium, Debrecen, Hungary Napfizikai Obszervatorium, Debrecen, Hungary 344 Institute for Dynamics of Geospheres, Moscow, Russia Institute for Dynamics of Geospheres, Moscow, Russia 345 Lille I, Univ., Villeneuve-d'Asqc, France Lille I, Univ., Villeneuve-d'Asqc, France Lille I, Univ., Villeneuve-d'Ascq, France 346 Kapteyn Laboratorium, Groningen, Netherlands Kapteyn Laboratorium, Groningen, Netherlands 347 Asher Space Research Institute, Haifa, Israel Asher Space Research Institute, Haifa, Israel 348 Toronto Univ., Mississauga, Canada Toronto Univ., Mississauga, Canada 349 Bandung Inst. of Technology, Indonesia Bandung Inst. of Technology, Indonesia 350 URA 1361 du CNRS, Saint-Vallier, France URA 1361 du CNRS, Saint-Vallier, France 351 Gettysburg College, Gettysburg, PA, US Gettysburg College, Gettysburg, PA, US 352 Max Planck-Institute, Garching, Germany Max Planck-Institute, Garching, Germany 353 Fuji Research Inst. Corp., Tokyo, Japan Fuji Research Inst. Corp., Tokyo, Japan 354 Univ. de Liege, Liege, Belgium Univ. de Liege, Liege, Belgium 355 Radiophysics, Inc., Boulder, CO Radiophysics, Inc., Boulder, CO 356 Vassar College, Poughkeepsie, NY Vassar College, Poughkeepsie, NY 357 ST Systems, Inc., Lanham, MD ST Systems, Inc., Lanham, MD 358 Ecole Polytechnique, Palaiseau Ecole Polytechnique, Palaiseau 359 Istituto Universitario Navale Istituto Universitario Navale 360 Basel Univ., Binningen, Switzerland Basel Univ., Binningen, Switzerland 361 Massachusetts Univ., Amherst Massachusetts Univ., Amherst 362 Utrecht, Rijksuniversiteit Utrecht, Rijksuniversiteit 363 USAF, Space Div., Los Angeles, CA USAF, Space Div., Los Angeles, CA 364 Ecole Normale Superieure, Paris Ecole Normale Superieure, Paris Ecole Normale Superieure Paris 365 Montpellier II, Universite Montpellier II, Universite 366 IF-UFRGS, Porto Alegre, Brazil IF-UFRGS, Porto Alegre, Brazil IF-UFRGS, Porto Allegre, Brasil 367 City College, New York, N.Y. City College, New York, N.Y. 368 New Mexico Univ., Albuquerque New Mexico Univ., Albuquerque 369 Capodimonte, Osservatorio Astronomico, Italy Capodimonte, Osservatorio Astronomico, Italy 370 Erwin Fick Observatory, Ames, IA Erwin Fick Observatory, Ames, IA 371 Strada dell'Osservatorio, Torinese, Italy Strada dell'Osservatorio, Torinese, Italy 372 Institut fuer Astronomie, Wien, Austria Institut fuer Astronomie, Wien, Austria 373 U.S. Naval Academy, Annapolis, MD U.S. Naval Academy, Annapolis, MD U.S. Naval Academy, Annapolis, Md. U.S Naval Academy, Annapolis, MD 374 CNR, Gruppo Nazionale per l'Astronomia, Padua CNR, Gruppo Nazionale per l'Astronomia, Padua 375 Sandia National Laboratories, Albuquerque, NM Sandia National Laboratories, Albuquerque, NM 376 College Hill, Armagh, N. Ireland, UK College Hill, Armagh, N. Ireland, UK 377 Leicester Univ., United Kingdom Leicester Univ., United Kingdom 378 Center for High Energy Astrophysics Center for High Energy Astrophysics 379 General Atomic Co., San Diego, Calif. General Atomic Co., San Diego, Calif. 380 National Center for Atmospheric Research National Center for Atmospheric Research 381 Five College Radio Observatory Five College Radio Observatory 382 Leopold-Franzens-Univ., Innsbruck, Austria Leopold-Franzens-Univ., Innsbruck, Austria 383 Univ. of Pennsylvania, Philadelphia, PA, US Univ. of Pennsylvania, Philadelphia, PA, US 384 University of Villanova, Villanova, PA, US University of Villanova, Villanova, PA, US 385 Perdue University, West Lafayette, IN, US Perdue University, West Lafayette, IN, US 386 Brockport State College, Brockport, N.Y. Brockport State College, Brockport, N.Y. 387 Max Planck Society, Jena, Germany Max Planck Society, Jena, Germany 388 Grumman Aerospace Corp., Bethpage, N.Y. Grumman Aerospace Corp., Bethpage, N.Y. 389 CNR, Ist. di Radioastronomia CNR, Ist. di Radioastronomia 390 Joint Inst. for Lab. Astrophysics Joint Inst. for Lab. Astrophysics 391 Colorado College, Colorado Springs, Colo. Colorado College, Colorado Springs, Colo. 392 Institute for Astronomy, Honolulu, Hawaii Institute for Astronomy, Honolulu, Hawaii 393 Inst. for Molecular Sciences, Okazaki, Japan Inst. for Molecular Sciences, Okazaki, Japan 394 Queen's Univ. of Belfast, Belfast, UK Queen's Univ. of Belfast, Belfast, UK 395 Union College, Schenectady, N.Y. Union College, Schenectady, N.Y. 396 IKI, Profsoiouznaia, Moscow, Russia IKI, Profsoiouznaia, Moscow, Russia 397 Astronomisches Inst., Germany Astronomisches Inst., Germany 398 Osaka Univ., Toyonaka, Osaka, Japan Osaka Univ., Toyonaka, Osaka, Japan 399 North Carolina State Univ., Raleigh North Carolina State Univ., Raleigh 400 NASA, Johnson Space Center, Houston NASA, Johnson Space Center, Houston 401 Dublin Inst. for Advanced Studies, Dublin, Ireland Dublin Inst. for Advanced Studies, Dublin, Ireland 402 Istituto di Palermo, Palermo, Italy Istituto di Palermo, Palermo, Italy 403 Laboratorium Voor Ruimteonderzoek, Utrecht, Netherlands Laboratorium Voor Ruimteonderzoek, Utrecht, Netherlands 404 Nijmegen, Katholieke Universiteit, Netherlands Nijmegen, Katholieke Universiteit, Netherlands 405 University of Amsterdam, Amsterdam, The Netherlands University of Amsterdam, Amsterdam, The Netherlands University of Amsterdam, Amsterdam, Netherlands 406 Inst. of Physical and Chemical Research, Wako, Japan Inst. of Physical and Chemical Research, Wako, Japan 407 Astrophysikalisches Institut Postdam, Postdam, Germany Astrophysikalisches Institut Postdam, Postdam, Germany 408 Postdam Astrophysical Institute, Postdam, Germany Postdam Astrophysical Institute, Postdam, Germany 409 Kapteyn Astronomical Institute, Groningen, The Netherlands Kapteyn Astronomical Institute, Groningen, The Netherlands 410 Pisa, Scuola Normale Superiore Pisa, Scuola Normale Superiore 411 AT&T Bell Labs., Murray Hill, NJ AT&T Bell Labs., Murray Hill, NJ 412 Amherst College, Amherst, Mass. Amherst College, Amherst, Mass. 413 IBM Italia S.p.A., Rome, Italy IBM Italia S.p.A., Rome, Italy 414 Academia Sinica, Taipei, Taiwan Academia Sinica, Taipei, Taiwan 415 Imad-ad-Dean, Inc., Bethesda, MD Imad-ad-Dean, Inc., Bethesda, MD 416 Chicago Adler Planetarium, IL Chicago Adler Planetarium, IL 417 Muenchen, Univ.-Sternwarte, Munich Muenchen, Univ.-Sternwarte, Munich 418 G-star Enterprises, Denver, CO G-star Enterprises, Denver, CO 419 Aspen Center for Physics, CO Aspen Center for Physics, CO 420 National Bureau of Standards National Bureau of Standards 421 Katholieke Univ. Leuven, Leuven, Belgium Katholieke Univ. Leuven, Leuven, Belgium 422 Seoul National Univ., Republic of Korea Seoul National Univ., Republic of Korea 423 Krakow Pedagogical Univ., Poland Krakow Pedagogical Univ., Poland 424 Amsterdam, Universiteit, Amsterdam Amsterdam, Universiteit, Amsterdam 425 Uppsala Astronomical Observatory, Sweden Uppsala Astronomical Observatory, Sweden 426 Franklin Institute, Bartol Research Foundation, Newark, DE Franklin Institute, Bartol Research Foundation, Newark, DE Franklin Institute, Bartol Research Foundation, Newark, Del. 427 AN SSSR, Institut Fizicheskikh Problem, Moscow, USSR AN SSSR, Institut Fizicheskikh Problem, Moscow, USSR 428 Tuorla Observatory, Turku Univ., Piikkio, Finland Tuorla Observatory, Turku Univ., Piikkio, Finland 429 Carnegie Institution of Washington, Washington Carnegie Institution of Washington, Washington 430 Butler University, Indianapolis, IN Butler University, Indianapolis, IN 431 University of Manchester, Manchester, England, UK University of Manchester, Manchester, England, UK 432 College of the Holy Cross, Worcester, MA College of the Holy Cross, Worcester, MA 433 Grenoble, Observatoire, France Grenoble, Observatoire, France 434 Ink Development Corp., San Mateo, CA, US Ink Development Corp., San Mateo, CA, US 435 CNRS, Istituto di Radioastronomia CNRS, Istituto di Radioastronomia CNR, Istituto di Radioastronomia 436 Universidad Complutense de Madrid, Madrid, Spain Universidad Complutense de Madrid, Madrid, Spain 437 Regional Engineering College, Srinagar, India Regional Engineering College, Srinagar, India 438 Bartol Research Institute, Newark, DE Bartol Research Institute, Newark, DE 439 Planetary Science Inst., Tucson, AZ Planetary Science Inst., Tucson, AZ 440 European Space Agency, Noordwijk, Netherlands European Space Agency, Noordwijk, Netherlands European Space Agency, Noordwijk, the Netherlands 441 Dublin Institute for Advanced Studies, Dublin, Ireland Dublin Institute for Advanced Studies, Dublin, Ireland 442 Wesleyan University, Middletown, Conn. Wesleyan University, Middletown, Conn. 443 Kyoto Univ., Uji and Kyoto, Japan Kyoto Univ., Uji and Kyoto, Japan 444 Wellington, Victoria University, Wellington, New Zealand Wellington, Victoria University, Wellington, New Zealand 445 Karlova Universita, Prague, Czechoslovakia Karlova Universita, Prague, Czechoslovakia 446 National Astronomical Observatory, Mitana, Tokyo, Japan National Astronomical Observatory, Mitaka, Tokyo, Japan National Astronomical Observatory, Mitana, Tokyo, Japan 447 NishiHarima Astronomical Observatory, Hyogo, Japan NishiHarima Astronomical Observatory, Hyogo, Japan 448 South African Astronomical Observatory, South Africa South African Astronomical Observatory, South Africa South Africa Astronomical Observatory, South Africa, 449 Onsala Space Observatory, S-43900 Onsala, Sweden Onsala Space Observatory, S-43900 Onsala, Sweden 450 Owens Valley Radio Observatory, Pasadena Owens Valley Radio Observatory, Pasadena 451 State Astronomical Inst., Nauchny, Ukraine State Astronomical Inst., Nauchny, Ukraine 452 Paris X, Universite, Ville-d'Avray, France Paris X, Universite, Ville-d'Avray, France 453 Astronomical Research, Ltd., Tauranga, New Zealand Astronomical Research, Ltd., Tauranga, New Zealand 454 Astronomical Inst., Amsterdam, The Netherlands Astronomical Inst., Amsterdam, The Netherlands 455 Dalhousie Univeristy, Halifax, Nova Scotia, Canada Dalhousie Univeristy, Halifax, Nova Scotia, Canada Dalhousie University, Halifax, Nova Scotia, Canada 456 Dept. of Physics, Astrophysics, Oxford, UK Dept. of Physics, Astrophysics, Oxford, UK 457 Universidad de Puerto Rico, Rio Piedras, PR Universidad de Puerto Rico, Rio Piedras, PR 458 National Radio Observatory, Socorro, NM, US National Radio Observatory, Socorro, NM, US 459 Uttar Pradesh State Observatory, Nainital, India Uttar Pradesh State Observatory, Nainital, India 460 Instituto Astronomico e Geofisico, Sao Paulo, Brazil Instituto Astronomico e Geofisico, Sao Paulo, Brazil 461 G-Star Enterprises, Denver, CO G-Star Enterprises, Denver, CO 462 State Astronomical Institute, Moscow, Russia State Astronomical Institute, Moscow, Russia 463 Pusan National Univ., Pusan, Republic of Korea Pusan National Univ., Pusan, Republic of Korea 464 Fermi National Accelerator lab., Batavia, IL, US Fermi National Accelerator lab., Batavia, IL, US Fermi National Accelerator Lab., Batavia, IL, US 465 Univ. of Wiconsin-Madison, Madison, WI, US Univ. of Wiconsin-Madison, Madison, WI, US Univ. of Wisconsin-Madison, Madison, WI, US 466 Univ. of California San Diego, La Jolla, CA, US Univ. of California San Diego, La Jolla, CA, US 467 College de France, Saint-Vallier, France College de France, Saint-Vallier, France 468 Univ. of North Carolina, Chapel Hill, NC, US Univ. of North Carolina, Chapel Hill, NC, US 469 Cote d'Azur, Observatoire, Nice, France Cote d'Azur, Observatoire, Nice, France Cote-d'Azur, Observatoire, Nice, France 470 Dwingeloo, Radiosterrenwacht, Dwingeloo, Netherlands Dwingeloo, Radiosterrenwacht, Dwingeloo, Netherlands 471 Space Telescope European Coordinating Facility Space Telescope European Coordinating Facility 472 Inst. Nacional de Tecnica Aeroespacial, Madrid, Spain Inst. Nacional de Tecnica Aeroespacial, Madrid, Spain 473 Massachusetts Inst. of Tech., Cambridge, MA, US Massachusetts Inst. of Tech., Cambridge, MA, US 474 Osservatorio di Catania, Catania, Italy Osservatorio di Catania, Catania, Italy 475 Institute of Isotopes, Budapest, Hungary Institute of Isotopes, Budapest, Hungary 476 Max-Planck-Inst. fuer Radioastronomie Max-Planck-Inst. fuer Radioastronomie 477 ESA, Space Telescope European Coordinating Facility, Garching, Federal Republic of Germany ESA, Space Telescope European Coordinating Facility, Garching, Federal Republic of Germany 478 Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, Federal Republic of Germany Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, Federal Republic of Germany 479 Space Telescope European Coordinating Facility, Garching, Germany Space Telescope European Coordinating Facility, Garching, Germany ESA, Space Telescope European Coordinating Facility, Garching, Germany Space Telescope European Coordinating Facility, Garching, Germany ESA, Space Telescope European Coordinating Facility, Garching, Germany Space Telescope-European Coordinating Facility, Garching, Germany Space Telescope - European Coordinating Facility, Garching, Germany ESA, Space Telescope-European Coordinating Facility, Garching, Germany 480 Max-Planck-Institut fuer Physik und Astrophysik, Munich, Federal Republic of Germany Max-Planck-Institut fuer Physik und Astrophysik, Munich, Federal Republic of Germany 481 CNR, Istituto per Ricerche in Fisica Cosmica e Tecnologie Relative, Milan, Italy CNR, Istituto per Ricerche in Fisica Cosmica e Tecnologie Relative, Milan, Italy 482 Inst. fuer Theoretische Physik und Sternwarte der Univ, Kiel, Germany Inst. fuer Theoretische Physik und Sternwarte der Univ, Kiel, Germany 483 Max-Planck-Institut fur extraterrestriche Physik, Giessenbachstrasse, 8046 Garching, Germany Max-Planck-Institut fur extraterrestriche Physik, Giessenbachstrasse, 8046 Garching, Germany Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, 85740 Garching, Germany 484 University of Oxford, Department of Physics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK University of Oxford, Department of Physics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK 485 INSU, Saint-Maur-des-Fosses, France INSU, Saint-Maur-des-Fosses, France 486 CNRS, Villeneuve d'Ascq, France CNRS, Villeneuve d'Ascq, France 487 New Jersey State Univ., Piscataway New Jersey State Univ., Piscataway 488 Lunar and Planetary Inst., Houston, TX, US Lunar and Planetary Inst., Houston, TX, US 489 USAF, Geophysics Laboratory, Hanscom AFB, MA USAF, Geophysics Laboratory, Hanscom AFB, MA USAF, Geophysics Laboratory, Hanscom AFB 490 Lau Kuei Huat /S/ Pte, Ltd., Singapore Lau Kuei Huat /S/ Pte, Ltd., Singapore 491 Leiden Southern Station, Broederstroom, Republic of South Africa Leiden Southern Station, Broederstroom, Republic of South Africa 492 Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi, Observatoire, Bagneres de Bigorre, Hautes-Pyrenees, France Pic du Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France 493 Kernforschungszantrum Karlsruhe GmbH, West Germany Kernforschungszentrum Karlsruhe GmbH, West Germany Kernforschungszantrum Karlsruhe GmbH, West Germany 494 Rikkyo Univ., Toshima, Tokyo, Japan Rikkyo Univ., Toshima, Tokyo, Japan 495 Science Applications Research, Lanham, MD Science Applications Research, Lanham, MD 496 Inst. de Fisica Corpuscular, Burjasot, Spain Inst. de Fisica Corpuscular, Burjasot, Spain 497 University of Belfast, Belfast, Northern Ireland University of Belfast, Belfast, Northern Ireland 498 Universidad de Santiago, Santiago de Compostela, Spain Universidad de Santiago, Santiago de Compostela, Spain 499 California Univ., San Diego, La Jolla, CA, US California Univ., San Diego, La Jolla, CA, US 500 Meteorological Research Institute, Tsukuba, Japan Meteorological Research Institute, Tsukuba, Japan 501 Lockheed Missiles and Space Co., Inc., Palo Alto, Calif. Lockheed Missiles and Space Co., Inc., Palo Alto, Calif. 502 Advanced Computer Concepts, Inc., Potomac, MD Advanced Computer Concepts, Inc., Potomac, MD 503 NSF, Div. of Astronomical Sciences, Washington NSF, Div. of Astronomical Sciences, Washington 504 CNR, Gruppo Nazionale di Astronomia CNR, Gruppo Nazionale di Astronomia 505 GA Technologies, Inc., San Diego, CA GA Technologies, Inc., San Diego, CA 506 Scarborough College, Westhill Scarborough College, Westhill 507 NOAA, Space Environment Lab., Boulder, CO NOAA, Space Environment Lab., Boulder, CO 508 Pennsylvania Univ., Philadelphia Pennsylvania Univ., Philadelphia 509 Eureka Scientific, Inc., Oakland, CA, US Eureka Scientific, Inc., Oakland, CA, US 510 Stichting Astronomisch Onderz Stichting Astronomisch Onderz 511 Arecibo Observatory, Arecibo, Puerto Rico Arecibo Observatory, Arecibo, Puerto Rico 512 Princeton Univ. Observatory, Peyton Hall, NJ, US Princeton Univ. Observatory, Peyton Hall, NJ, US 513 Astronomical Observatory, St. Petersburg, Russia Astronomical Observatory, St. Petersburg, Russia 514 Research and Data Systems Corp., Greenbelt, MD Research and Data Systems Corp., Greenbelt, MD 515 Rockwell Power Systems, Albuquerque, NM, US Rockwell Power Systems, Albuquerque, NM, US 516 Univ. of Pittsburg, Pittsburgh, PA, US Univ. of Pittsburg, Pittsburgh, PA, US Univ. of Pittsburgh, Pittsburgh, PA, US 517 Univ. of Manchester, Macclesfield, U.K. Univ. of Manchester, Macclesfield, U.K. 518 Armagh Observatory, College Hill, Armagh BT61 9DG Armagh Observatory, College Hill, Armagh BT61 9DG 519 SASC Technologies, Inc., Lanham, MD SASC Technologies, Inc., Lanham, MD 520 Observatories of the Carnegie Institution, Pasadena Observatories of the Carnegie Institution, Pasadena 521 Copenhagen Univ. Observatory, Copenhagen K, Denmark Copenhagen Univ. Observatory, Copenhagen K, Denmark 522 Radio Astronomy Observatory, Ann Arbor, Mich. Radio Astronomy Observatory, Ann Arbor, Mich. 523 DEMIRM, Observatoire de Paris, Paris, France DEMIRM, Observatoire de Paris, Paris, France 524 Paris-Meudon Observatory, Meudon, France Paris-Meudon Observatory, Meudon, France 525 University of Alabama at Huntsville, Huntsville, AL, US University of Alabama at Huntsville, Huntsville, AL, US 526 Westfalische Wilhelms-Univ., Muenster, Germany Westfalische Wilhelms-Univ., Muenster, Germany 527 Oak Ridge National Laboratory, Oak Ridge, Tenn. Oak Ridge National Laboratory, Oak Ridge, Tenn. 528 Grenoble I, Universite, Grenoble, France Grenoble I, Universite, Grenoble, France 529 Astronomisches Rechen-Institut, Heidelberg, West Germany Astronomisches Rechen-Institut, Heidelberg, West Germany Astronomisches Rechen-Institut, Heidelberg, Germany Astronomisches Recheninstitut, Heidelberg, West Germany 530 Jamieson Science and Engineering, Inc., Felton, CA Jamieson Science and Engineering, Inc., Felton, CA 531 Glasgow, University, Observatory, Glasgow, Scotland Glasgow, University, Observatory, Glasgow, Scotland 532 University Observatory Munich, Munich, Germany University Observatory Munich, Munich, Germany 533 NASA/Fermilab Astrophysics Center, Batavia NASA/Fermilab Astrophysics Center, Batavia 534 Physics Department, Durham University, Durham DH1 3LE, UK Physics Department, Durham University, Durham DH1 3LE, UK 535 CNR, Gruppo Nazionale per l'Astronomia, Padua, Italy CNR, Gruppo Nazionale per l'Astronomia, Padua, Italy 536 Union College, Schenectady, NY, US Union College, Schenectady, NY, US 537 Institut d'Estudis Catalans, Spain Institut d'Estudis Catalans, Spain 538 Communications Research Lab., Tokyo, Japan Communications Research Lab., Tokyo, Japan 539 Computer Sciences Corp., Silver Spring Computer Sciences Corp., Silver Spring 540 Bhabha Atomic Research Centre, Srinagar, India Bhabha Atomic Research Centre, Srinagar, India 541 Instituto Argentino de Radioastronomia, Villa Elisa Instituto Argentino de Radiodastronomia Villa Elisa Instituto Argentino de Radioastronomia, Villa Elisa 542 AN ASSR, Fizicheskii Institut, Yerevan, Armenian SSR AN ASSR, Fizicheskii Institut, Yerevan, Armenian SSR 543 Jet Propulsion Lab, Pasedena, CA, US Jet Propulsion Lab, Pasedena, CA, US 544 AT&T Bell Laboratories, Murray Hill AT&T Bell Laboratories, Murray Hill 545 Astronomical Inst., Czech Republic Astronomical Inst., Czech Republic 546 Aerospace Corp., Los Angeles, Calif. Aerospace Corp., Los Angeles, Calif. 547 Sterrewacht Leiden, Leiden, Germany Sterrewacht Leiden, Leiden, Germany 548 Fukushima Medical College, Japan Fukushima Medical College, Japan 549 Danish Space Research Inst., Lyngby Danish Space Research Inst., Lyngby 550 RAN, Inst. Astronomii, Moscow, Russia RAN, Inst. Astronomii, Moscow, Russia 551 Sibirskij IZMIRAN, Irkutsk, Russia Sibirskij IZMIRAN, Irkutsk, Russia 552 Univ. Muenchen, Muenchen, Germany Univ. Muenchen, Muenchen, Germany 553 ISRO, Satellite Centre, Bangalore, India ISRO, Satellite Centre, Bangalore, India ISRO Satellite Center, Bangalore, India ISRO Satellite Centre, Bangalore, India 554 Carleton College, Northfield, MN Carleton College, Northfield, MN 555 Sternwarte der Univ. Bonn, Bonn, Germany Sternwarte der Univ. Bonn, Bonn, Germany 556 Chicago Adler Planetarium, Chicago, IL Chicago Adler Planetarium, Chicago, IL 557 Univ. of Oslo, Blindern, Oslo, Norway Univ. of Oslo, Blindern, Oslo, Norway 558 Goettingen, Univ.-Sternwarte, Germany Goettingen, Univ.-Sternwarte, Germany 559 Sterrenkundig Observatorium, Gent, Belgium Sterrenkundig Observatorium, Gent, Belgium Sterrekundig Observatorium, Ghent, Belgium 560 Istituto Universitario Navale, Naples, Italy Istituto Universitario Navale, Naples, Italy 561 AN SSSR, Astronomicheskii Sovet, Moscow, USSR AN SSSR, Astronomicheskii Sovet, Moscow, USSR 562 Raman Research Institute, Bangalore 560 080, India Raman Research Institute, Bangalore 560 080, India 563 Flower and Cook Observatory, Philadelphia, Pa. Flower and Cook Observatory, Philadelphia, Pa. 564 Pic-du-Midi et Toulouse, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hauts-Pyrenees, France Pic-du-Midi et Toulouse, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi et de Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic-du-Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France Pic du Midi et Toulouse, Observatoires, Bagneres-de-Bigorre, Hautes-Pyrenees, France 565 Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Grasse, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Grasse, France 566 Centre d'Etudes et de Recherches de la Machine-Outil, Grenoble, France Centre d'Etudes et de Recherches de la Machine-Outil, Grenoble, France 567 Sternberg Astronomical Institute, University of Moscow, Moscow, Russia Sternberg Astronomical Institute, University of Moscow, Moscow, Russia 568 Astrofizicheskaia Observatoriia, Tortu, Estonian SSR Astrofizicheskaia Observatoriia, Tortu, Estonian SSR Astrofizicheskaia Observatoriia, Tartu, Estonian SSR 569 Middle East Technical University, Ankara, Turkey Middle East Technical University, Ankara, Turkey 570 European Space Research and Technology Centre, Noordwijk, Netherlands European Space Research and Technology Centre, Noordwijk, Netherlands 571 Royal Greenwich Observatory, Madingley Rd, Cambridge, CB3 0EZ, UK Royal Greenwich Observatory, Madingley Rd, Cambridge, CB3 0EZ, UK 572 San Fernando Observatory, California State Univ., Northridge, CA, US San Fernando Observatory, California State Univ., Northridge, CA, US 573 Carter National Observatory, Wellington, New Zealand Carter National Observatory, Wellington, New Zealand 574 Vilnyus Astronomical Observatory, Vilnyus, Lithuanian SSR Vilnyus Astronomical Observatory, Vilnyus, Lithuanian SSR 575 Beijing Astronomical Observatory, People's Republic of China Beijing Astronomical Observatory, People's Republic of China 576 Ministerio de Educacion, Instituto Isaac Newton, Santiago, Chile Ministerio de Educacion, Instituto Isaac Newton, Santiago, Chile 577 Observatoire de Paris-Meudon, 92195 Meudon Cedex, France Observatoire de Paris-Meudon, 92195 Meudon Cedex, France 578 Astronomical Observatory, Kunming, People's Republic of China Astronomical Observatory, Nanjing, People's Republic of China Astronomical Observatory, Kunming, People's Republic of China Astronomical Observatory, Beijing, People's Republic of China 579 Anglo-Australian Observatory, PO Box 296, Epping, NSW2121, Australia Anglo-Australian Observatory, PO Box 296, Epping, NSW2121, Australia Anglo-Australian Observatory, PO Box 296, Epping NSW 2121, Australia 580 Palomar Observatory, California Inst. of Technology, Pasadena, CA, US Palomar Observatory, California Inst. of Technology, Pasadena, CA, US Palomar Observatory, California Inst. of Tech., Pasadena, CA, US Palomer Obervatory, California Inst. of Technology, Pasadena, CA, US 581 Vicolo dell'Osservatorio, Universita di Padova, Padova, Italy Vicolo dell'Osservatorio, Universita di Padova, Padova, Italy 582 American Science and Engineering, Inc., Cambridge, Mass. American Science and Engineering, Inc., Cambridge, Mass. 583 Univ. of Massachusetts at Amherst, Amherst, MA, US Univ. of Massachusetts at Amherst, Amherst, MA, US 584 Institute of Ocean Sciences, Sidney, Canada Institute of Ocean Sciences, Sidney, Canada 585 Planetary Science Institute, Tucson, AZ, US Planetary Science Institute, Tucson, AZ, US 586 South West Jiaotong University, Chengdu, China South West Jiaotong University, Chengdu, China 587 National Science Foundation, Arlington, VA, US National Science Foundation, Arlington, VA, US 588 Lyon, Ecole Normale Superieure, France Lyon, Ecole Normale Superieure, France 589 Aligarh Muslim University, Aligarh, India Aligarh Muslim University, Aligarh, India 590 Millimeter Wave Observatory, Fort Davis Millimeter Wave Observatory, Fort Davis 591 Barcelona, Universidad Politecnica, Barcelona, Spain Barcelona, Universidad Politecnica, Barcelona, Spain 592 Paris XI, Universite, Orsay, Essonne, France Paris XI, Universite, Orsay, Essonne, France 593 Hitotsubashi University, Kunitachi, Japan Hitotsubashi University, Kunitachi, Japan 594 Missouri-Columbia, University, Columbia, Mo. Missouri-Columbia, University, Columbia, Mo. Missouri-Columbia, University, Columbia, MO 595 Main Astronomical Observatory, Goloseevo, Ukraine Main Astronomical Observatory, Goloseevo, Ukraine 596 Astronomical Observatory, Prague, Czechoslovakia Astronomical Observatory, Prague, Czechoslovakia 597 China University of Science and Technology, Hofei, Communist China China University of Science and Technology, Hofei, Communist China 598 Slovak Academy of Sciences, Astronomical Inst., Bratislava, Slovakia Slovak Academy of Sciences, Astronomical Inst., Bratislava, Slovakia 599 Mullard Space Science Laboratory, Dorking, England Mullard Space Science Laboratory, Dorking, England 600 Univ. of Science and Technology of China, Hefei Univ. of Science and Technology of China, Hefei 601 Astronomisches Inst. der Univ., Bamberg, Germany Astronomisches Inst. der Univ., Bamberg, Germany 602 Erwin W. Fick Observatory, Ames, Iowa Erwin W. Fick Observatory, Ames, Iowa 603 School of Natural Sciences, Princeton, NJ, US School of Natural Sciences, Princeton, NJ, US 604 China Center for Advanced Science and Technology, Beijing China Center for Advanced Science and Technology, Beijing China Center of Advanced Science and Technology, Beijing 605 National Center for Atmospheric Research, Boulder, CO National Center for Atmospheric Research, Boulder, CO 606 Green Grove Observatory, Salt Lake City, UT, US Green Grove Observatory, Salt Lake City, UT, US 607 Katholieke Univ., Nijmegen, The Netherlands Katholieke Univ., Nijmegen, The Netherlands 608 Univ. of California at San Diego, La Jolla, CA, US Univ. of California at San Diego, La Jolla, CA, US 609 Illinois Wesleyan University, Bloomington Illinois Wesleyan University, Bloomington 610 Theoretical Physics, 1 Keble Road, Oxford OX1 3NP Theoretical Physics, 1 Keble Road, Oxford OX1 3NP Theoretical Physics, Keble Road, Oxford OX1 3NP 611 Cooperative Institute for Research in Environmental Sciences Cooperative Institute for Research in Environmental Sciences 612 Nuffield Radio Astronomy Labs., Jodrell Bank, United Kingdom Nuffield Radio Astronomy Labs., Jodrell Bank, United Kingdom 613 Kiel, Univ., Inst. fuer Theoretische Physik und Sternwarte, Germany Kiel, Univ., Inst. fuer Theoretische Physik und Sternwarte, Germany 614 CNR, Ist. di Studio e Tecnologie sulle Radiazioni Extraterrestri, Bologna CNR, Ist. di Studio e Tecnologie sulle Radiazioni Extraterrestri, Bologna CNR, Ist. di Studio e Tecnologie delle Radiazioni Extraterrestri, Bologna CNR, Ist. di Studio e Tecnologie sulle Radiazioni Extraterrestri, Bologna, Italy 615 Cooperative Institute for Research in Environmental Sciences, Boulder, CO Cooperative Institute for Research in Environmental Sciences, Boulder, CO Cooperative Institute for Research in Environmental Science, Boulder, CO 616 Canterbury Univ., Christchurch, New Zealand Canterbury Univ., Christchurch, New Zealand 617 Pinecrest Observatory, Honolulu, HI Pinecrest Observatory, Honolulu, HI 618 Western Carolina University, Cullowhee, NC Western Carolina University, Cullowhee, NC 619 Service P.T.N., Bruyeres le Chatel, France Service P.T.N., Bruyeres le Chatel, France 620 National Research Council, Ottawa, Canada National Research Council, Ottawa, Canada 621 Chalmers Univ. of Tech., Goeteborg, Sweden Chalmers Univ. of Tech., Goeteborg, Sweden 622 Bartol Research Foundation, Newark, DE Bartol Research Foundation, Newark, DE 623 Science Research Council, Appleton Laboratory Science Research Council, Appleton Laboratory 624 Univ. de Buenos Aires, Buenos Aires, Argentina Univ. de Buenos Aires, Buenos Aires, Argentina 625 University of California, Irvine, CA, US University of California, Irvine, CA, US 626 Aerospace Corporation, Los Angeles, CA, US Aerospace Corporation, Los Angeles, CA, US 627 Insititute of Technology, Cambridge, MA, 02139 Insititute of Technology, Cambridge, MA, 02139 628 Universitat Heidelberg, Heidelberg, Germany Universitat Heidelberg, Heidelberg, Germany 629 Bordeaux, Observatoire, Floirac, Gironde, France Bordeaux, Observatoire, Floirac, Gironde, France 630 Berkeley Research Associates, Boulder, CO Berkeley Research Associates, Boulder, CO 631 Saint Mary's University, Halifax, Canada Saint Mary's University, Halifax, Canada 632 Planetary Science Institute, Tucson, AZ Planetary Science Institute, Tucson, AZ 633 Astronomisches Institut, Tuebingen, Germany Astronomisches Institut, Tuebingen, Germany 634 Yukawa Inst., Kyoto Univ., Kyoto, Japan Yukawa Inst., Kyoto Univ., Kyoto, Japan 635 Univ. of Texas at Austin, Austin, TX, US Univ. of Texas at Austin, Austin, TX, US 636 George Mason University, Fairfax, VA, US George Mason University, Fairfax, VA, US 637 The Ohio State University, Columbus, OH, US The Ohio State University, Columbus, OH, US Ohio State University, Columbus, OH, US 638 Niels Bohr Institute, Copenhagen, Denmark Niels Bohr Institute, Copenhagen, Denmark 639 Crete, Orthodox Academy, Kolimbari, Greece Crete, Orthodox Academy, Kolimbari, Greece 640 Monash Univ., Clayton, Victoria, Australia Monash Univ., Clayton, Victoria, Australia Monash Univ., Clayton Victoria, Australia 641 C.E. Kenneth Mees Observatory, NY C.E. Kenneth Mees Observatory, NY 642 Eastern College, Saint Davids, PA Eastern College, Saint Davids, PA 643 Middlebury College, Middlebury, VT, US Middlebury College, Middlebury, VT, US 644 Science Applications, Inc., McLean, VA Science Applications, Inc., McLean, VA Science Applications, Inc., McLean, Va. 645 Ecole Polytechnique, Palaiseau, France Ecole Polytechnique, Palaiseau, France 646 CESR-CNRS/UPS, Toulouse, France CESR-CNRS/UPS, Toulouse, France 647 Osaka Prefecture Univ., Sakai, Japan Osaka Prefecture Univ., Sakai, Japan 648 Witwatersrand Univ., Wits, South Africa Witwatersrand Univ., Wits, South Africa 649 Osservatorio Astrofisico, Asiago Osservatorio Astrofisico, Asiago 650 Cordoba, Observatorio, Argentina Cordoba, Observatorio, Argentina 651 Charles Univ., Prague, Czech Republic Charles Univ., Prague, Czech Republic 652 Instituto de Astronomia, Mexico Instituto de Astronomia, Mexico 653 Sibirskii IZMIRAN, Irkutsk, USSR Sibirskii IZMIRAN, Irkutsk, USSR 654 DAPNIA, Gif-sur-Yvette, France DAPNIA, Gif-sur-Yvette, France DAPNIA, Gif sur Yvette, France 655 ETA Systems, Inc., Saint Paul, MN ETA Systems, Inc., Saint Paul, MN 656 Innsbruck, Universitaet, Innsbruck, Austria Innsbruck, Universitaet, Innsbruck, Austria 657 Athens, National Capodistrian University, Greece Athens, National Capodistrian University, Greece 658 Societat Catalana de Fisica, Barcelona, Spain Societat Catalana de Fisica, Barcelona, Spain 659 Antwerpen, Rijkuniversitair Centrum, Antwerp, Belgium Antwerpen, Rijksuniversitair Centrum, Antwerp, Belgium Antwerpen, Rijkuniversitair Centrum, Antwerp, Belgium 660 Tsing Hua University, Hsinchu, Republic of China Tsing Hua University, Hsinchu, Republic of China 661 Univ. College Dublin, Belfield, Dublin, Ireland Univ. College Dublin, Belfield, Dublin, Ireland 662 Univ. of Utah, Salt Lake City, UT, US Univ. of Utah, Salt Lake City, UT, US 663 Institute of Physics, Beograd, Yugoslavia Institute of Physics, Beograd, Yugoslavia 664 National Center for Supercomputing Applications National Center for Supercomputing Applications 665 Univ. of Osaka Prefecture, Osaka, Japan Univ. of Osaka Prefecture, Osaka, Japan 666 Inst. for Cosmic Research, Moscow, Russia Inst. for Cosmic Research, Moscow, Russia 667 Lyon, Ecole Normale Superieure, Lyons, France Lyon, Ecole Normale Superieure, Lyons, France 668 Inst. for Molecular Science, Okazaki, Japan Inst. for Molecular Science, Okazaki, Japan 669 Northwestern University, Evanston, Ill. Northwestern University, Evanston, Ill. 670 Tokyo Gakugei University, Koganei, Japan Tokyo Gakugei University, Koganei, Japan 671 Kungliga Tekniska Hogskolan, Stockholm, Sweden Kungliga Tekniska Hogskolan, Stockholm, Sweden 672 Jawaharlal Nehru University, New Delhi, India Jawaharlal Nehru University, New Delhi, India 673 Western Connecticut State Univ., Danbury Western Connecticut State Univ., Danbury 674 U.S. Naval Postgraduate School, Monterey, Calif. U.S. Naval Postgraduate School, Monterey, Calif. 675 Univ. of New Orleans, New Orleans, LA, Us Univ. of New Orleans, New Orleans, LA, Us Univ. of New Orleans, New Orleans, LA, US 676 MPI fuer Aeronomie, Katlenburg-Lindau, Germany MPI fuer Aeronomie, Katlenburg-Lindau, Germany 677 International Center for Relativistic Astrophysics, Rome International Center for Relativistic Astrophysics, Rome 678 Lab. for Space Research Groningen, Netherlands Lab. for Space Research, Groningen, Netherlands Lab. for Space Research Groningen, Netherlands 679 Keldysh Institute of Applied Mathematics, Moscow, Russia Keldysh Institute of Applied Mathematics, Moscow, Russia 680 Danish Space Research Inst., Lyngby, Denmark Danish Space Research Inst., Lyngby, Denmark 681 Communications Research Laboratory, Koganei, Japan Communications Research Laboratory, Koganei, Japan 682 Institut Geographique National, Saint-Mande, France Institut Geographique National, Saint-Mande, France Institut Geographique National, Saint Mande, France 683 University of Groningen, Groningen, Netherlands University of Groningen, Groningen, Netherlands 684 Istituto Nazionale di Fisica Nucleare, Padua, Italy Istituto Nazionale di Fisica Nucleare, Padua, Italy 685 Observatoire du Pic-du-Midi, Bagneres-de-Bigorre, France Observatoire du Pic-du-Midi, Bagneres-de-Bigorre, France Observatoire du Pic du Midi, Bagneres de Bigorre, France Observatorie du Pic du Midi, Bagneres de Bigorre, France 686 Inst. Nacional de Astrofisica, Optica y Electronica, Puebla Inst. Nacional de Astrofisica, Optica y Electronica, Puebla 687 Univ. of Electro-Communications, Tokyo, Japan Univ. of Electro-Communications, Tokyo, Japan 688 Centro di Studi sui Sistemi, Turin, Italy Centro di Studi sui Sistemi, Turin, Italy 689 AN SSSR, Institut Prikladnoi Matematiki, Moscow, USSR AN SSSR, Institut Prikladnoi Matematiki, Moscow, USSR 690 Instituto Nacional de Tecnica Aeroespacial, Madrid, Spain Instituto Nacional de Tecnica Aeroespacial, Madrid, Spain 691 Univ. of of Hawaii, Honolulu, Hawaii, US Univ. of of Hawaii, Honolulu, Hawaii, US 692 Univ. of St. Andrews, St. Andrews, Scotland, UK Univ. of St. Andrews, St. Andrews, Scotland, UK 693 Universities Space Research Association NASA/GSFC, Greenbelt, MD 20711, USA Universities Space Research Association NASA/GSFC, Greenbelt, MD 20711, USA 694 Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, West Germany Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, West Germany Kernfoschungszentrum Karlsruhe GmbH, Karlsruhe, West Germany Kernforschungszentrum Karlsruhe, GmbH, Karlsruhe, West Germany 695 Imperial College of Science, Technology, and Medicine, London, United Kingdom Imperial College of Science, Technology, and Medicine, London, United Kingdom 696 Groupe d'Astrophysique de Grenoble, Grenoble, France Groupe d'Astrophysique de Grenoble, Grenoble, France 697 Univ. of the West Indies, Trinidad, West Indies Univ. of the West Indies, Trinidad, West Indies 698 Tennessee State University, Nashville, TN, US Tennessee State University, Nashville, TN, US 699 University College of Wales, Aberystwyth, Wales University College of Wales, Aberystwyth, Wales 700 Wollongong, University, Wollongong, Australia Wollongong, University, Wollongong, Australia 701 St. Andrews, University, United Kingdom St. Andrews, University, United Kingdom 702 Universidad Autonoma de Madrid, Cantoblanco, Madrid, Spain Universidad Autonoma de Madrid, Cantoblanco, Madrid, Spain 703 Nuffield Radio Astronomy Laboratories, Macclesfield, England Nuffield Radio Astronomy Laboratories, Macclesfield, England 704 Academy of Sciences of the Ukraine, Kiev, Ukraine Academy of Sciences of the Ukraine, Kiev, Ukraine 705 Appalachian State Univ., Boone, NC Appalachian State Univ., Boone, NC 706 Sachs/Freeman Associates, Inc., Landover, MD Sachs/Freeman Associates, Inc., Landover, MD 707 CNRS, Service d'Aeronomie, Verrieres-le-Buisson, France CNRS, Service d'Aeronomie, Verrieres-le-Buisson, France CNRS, Service d'Aeronomie Verrieres-le-Buisson, France CEA, Service d'Aeronomie, Verrieres-le-Buisson, France 708 Observatorie de Paris et Univ. Paris, Meudon Cedex, France Observatorie de Paris et Univ. Paris, Meudon Cedex, France 709 New Mexico, University, Albuquerque, N. Mex. New Mexico, University, Albuquerque, N. Mex. 710 CNRS, Centre de Physique Theorique, Marseille, France CNRS, Centre de Physique Theorique, Marseille, France 711 NASA, Goddard Space Flight Center, Laboratory for Optical Astronomy, Greenbelt, Md. NASA, Goddard Space Flight Center, Laboratory for Optical Astronomy, Greenbelt, Md. 712 Teledyne Brown Engineering, Huntsville, AL Teledyne Brown Engineering, Huntsville, AL 713 Glavnaia Astronomicheskaia Observatoriia, Kiev, Ukraine Glavnaia Astronomicheskaia Observatoriia, Kiev, Ukraine 714 Dunsink Observatory, Dublin, Republic of Ireland Dunsink Observatory, Dublin, Republic of Ireland 715 National Bureau of Standards, Optical Physics Div., Washington, D.C. National Bureau of Standards, Optical Physics Div., Washington, D.C. 716 MRAO, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK MRAO, Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK 717 The Observatories, Madingley Road, Cambridge CB3 0HA, UK The Observatories, Madingley Road, Cambridge CB3 0HA, UK 718 Service d'Aeronomie du CNRS, Verrieres-le-Buisso, France Service d'Aeronomie du CNRS, Verrieres-le-Buisso, France 719 Instytut Problemow Jadrowych, Lodz, Poland Instytut Problemow Jadrowych, Lodz, Poland 720 Tuorla Observatory, Turku Univ., Pikkio, Finland Tuorla Observatory, Turku Univ., Pikkio, Finland 721 Observatoire de Paris-Meudon, Meudon Principal, France Observatoire de Paris-Meudon, Meudon Principal, France 722 Embry-Riddle Aeronautical University, Daytona Beach, FL Embry-Riddle Aeronautical University, Daytona Beach, FL Embry-Riddle Aeronautical University, Daytona Beach, Fla. 723 King Abdulaziz University, Jeddah, Saudi Arabia King Abdulaziz University, Jeddah, Saudi Arabia 724 CNR, Ist. Fisica Spazio Interplanetario, Frascati, Italy CNR, Ist. Fisica Spazio Interplanetario, Frascati, Italy 725 Univ. of Missouri-St. Louis, St. Louis, MO, US Univ. of Missouri-St. Louis, St. Louis, MO, US 726 Univ. of Virginia, Charlottesville, VA, US Univ. of Virginia, Charlottesville, VA, US Univ. of Virgina, Charlottesville, VA, US 727 Chilbolton Observatory, Stockbridge, Hants., England Chilbolton Observatory, Stockbridge, Hants., England 728 NASA, Astrophysics Div., Washington, DC NASA, Astrophysics Div., Washington, DC NASA, Astrophysics Div., Washington, D.C. 729 Physics Department, The University, Durham DH1 3LE Physics Department, The University, Durham DH1 3LE 730 Univ. Nacional de La Plata, La Plata, Argentina Univ. Nacional de La Plata, La Plata, Argentina Univ. Nacional de la Plata, La Plata, Argentina 731 Inst. Argentino de Radioastronomia, Argentina Inst. Argentino de Radioastronomia, Argentina 732 Sunset Hills Observatory, Hacienda Hgts., CA, US Sunset Hills Observatory, Hacienda Hgts., CA, US 733 Kansai Advanced Research Center, Kobe, Japan Kansai Advanced Research Center, Kobe, Japan 734 University Observatory Munich, Munchen, Germany University Observatory Munich, Munchen, Germany 735 Lorand Eotvos University, Budapest, Hungary Lorand Eotvos University, Budapest, Hungary 736 Mt. John Observatory, Christchurch, New Zealand Mt. John Observatory, Christchurch, New Zealand Mount John Observatory, Christchurch, New Zealand 737 National Center for Atmospheric, Boulder, CO, US National Center for Atmospheric, Boulder, CO, US 738 University of Sussex, Brighton, UK University of Sussex, Brighton, UK 739 Jet Propulsion Laboratory, Pasadena, CA, US Jet Propulsion Laboratory, Pasadena, CA, US 740 Michigan Technological Univ., Houghton, MI, US Michigan Technological Univ., Houghton, MI, US 741 Univ. of Calif., Santa Barbara, CA, US Univ. of Calif., Santa Barbara, CA, US Univ. of Calif., Santa Barbara, CA, US 742 Mount Wilson Observatory, Mount Wislon, CA, US Mount Wilson Observatory, Mount Wislon, CA, US 743 Bendix Field Engineering Corp., Columbia, MD Bendix Field Engineering Corp., Columbia, MD 744 McDonald Observatory, Texas Univ., Austin, TX, US McDonald Observatory, Texas Univ., Austin, TX, US 745 Beijing Astronomical Observatory, China Beijing Astronomical Observatory, China 746 Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, France Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, France 747 Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees Pic-du-Midi, Observatoire, Bagneres-de-Bigorre, Hautes-Pyrenees 748 Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ Royal Observatory, Blackford Hill, Edinburgh EH93HJ 749 Clark Lake Radio Observatory, Borrego Springs, Calif. Clark Lake Radio Observatory, Borrego Springs, Calif. 750 Akademiia Nauk SSSR, Fiziko-Tekhnicheskii Institut, Leningrad, USSR Akademiia Nauk SSSR, Fiziko-Tekhnicheskii Institut, Leningrad, USSR 751 Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ 752 Asiago, Osservatorio Astrofisico, Padua, Italy Asiago, Osservatorio Astrofisico, Padua, Italy 753 Boyden Observatory, Bloemfontein, Republic of South Africa Boyden Observatory, Bloemfontein, Republic of South Africa 754 Purple Mountain Observatory, Nanjing, People's Republic of China Purple Mountain Observatory, Nanjing, People's Republic of China 755 American Science and Engineering, Inc., Arlington, MA American Science and Engineering, Inc., Arlington, MA 756 National Solar Observatory, Sacramento Peak, NM, US National Solar Observatory, Sacramento Peak, NM, US 757 SRON Laboratory for Space Research, Utrecht, The Netherlands SRON Laboratory for Space Research, Utrecht, The Netherlands 758 Universita degli Studi di Milano, Milano, Italy Universita degli Studi di Milano, Milano, Italy 759 Sonnenobservatorium Einsteinturm, Potsdam, East Germany Sonnenobservatorium Einsteinturm, Potsdam, East Germany 760 Observatoire Astronomique-URA, Strasbourg, France Observatoire Astronomique-URA, Strasbourg, France 761 La Palma Observatory, Santa Cruz de la Palma, Spain La Palma Observatory, Santa Cruz de la Palma, Spain 762 Observatoire du Calern, Saint-Vallier-de Thiey, France Observatoire du Calern, Saint-Vallier-de Thiey, France 763 EXOSAT Observatory, Noordwijk, The Netherlands EXOSAT Observatory, Noordwijk, The Netherlands 764 Federal Inst. of Technology, Zurich, Switzerland Federal Inst. of Technology, Zurich, Switzerland 765 Carleton College, Northfield, MN, US Carleton College, Northfield, MN, US 766 Observatoire de Geneve, Sauverny, Switzerland Observatoire de Geneve, Sauverny, Switzerland 767 Solar Physics Research Corporation, Tucson, AZ, US Solar Physics Research Corporation, Tucson, AZ, US 768 Strasbourg, Astronomical Institute, France Strasbourg, Astronomical Institute, France 769 Lab. d'Astrophysique de Toulouse, Toulouse, France Lab. d'Astrophysique de Toulouse, Toulouse, France 770 CNRS, Institut d'Astrophysique Spatiale, Verrieres-le-Buisson CNRS, Institut d'Astrophysique Spatiale, Verrieres-le-Buisson 771 Lick Observatory, California Univ., Santa Cruz, CA, US Lick Observatory, California Univ., Santa Cruz, CA, US 772 University of California, Santa Cruz, California, US University of California, Santa Cruz, California, US 773 University of Southampton, Highfield, UK University of Southampton, Highfield, UK 774 University of Garyounis, Benghazi, Libya University of Garyounis, Benghazi, Libya 775 University of the Pacific, Stockton, CA University of the Pacific, Stockton, CA 776 State Univ. of New York, Stony Brook, NY, US State Univ. of New York, Stony Brook, NY, US 777 University of Cantabria, Cantabria, Spain University of Cantabria, Cantabria, Spain 778 Severn Communications Corp., Severna Park, MD Severn Communications Corp., Severna Park, MD 779 University of Hawaii, Honolulu, Hawaii, US University of Hawaii, Honolulu, Hawaii, US 780 University of Arkansas, Little Rock, AR, US University of Arkansas, Little Rock, AR, US 781 Keele University, Keele, Staffordshire, UK Keele University, Keele, Staffordshire, UK 782 Lowell Observatory, Flagstaff, Arizona, US Lowell Observatory, Flagstaff, Arizona, US 783 Rutgers University, Piscataway, NJ, US Rutgers University, Piscataway, NJ, US 784 University of Chicago, Williams Bay, WI, US University of Chicago, Williams Bay, WI, US 785 NOAA, Space Environment Laboratory, Boulder, CO NOAA, Space Environment Laboratory, Boulder, CO NOAA, Space Environment Laboratory, Boulder, Colo. NOAA, Space Environment Laboratory, Boulder, CO NOAA, Space Environment Laboratory, Boulder, Colo. NOAA, Space Environmental Laboratory, Boulder, CO 786 Owens Valley Radio Observatory, Big Pine, CA Owens Valley Radio Observatory, Big Pine, CA 787 Massachusetts, University, Amherst, Mass. Massachusetts, University, Amherst, Mass. Massachusetts, University Amherst, Mass. 788 Utah, University, Salt Lake City, Utah Utah, University, Salt Lake City, Utah 789 Minnesota, University, Minneapolis, Minn. Minnesota, University, Minneapolis, Minn. Minnesota University, Minneapolis, Minn. 790 Monash University, Clayton, Victoria, Australia Monash University, Clayton, Victoria, Australia 791 Institute of Strategic Studies, Islamabad, Pakistan Institute of Strategic Studies, Islamabad, Pakistan 792 C.N.R., Gruppo Nazional Astronomia, Firenze, Italy C.N.R., Gruppo Nazional Astronomia, Firenze, Italy 793 Monterey Institute for Research in Astronomy, CA Monterey Institute for Research in Astronomy, CA 794 Huazhong Normal Univ., Hubei, China Huazhong Normal Univ., Hubei, China 795 National Research Council of Canada, Ottawa National Research Council of Canada, Ottawa 796 Dipartimento di Astronomia, Padova, Italy Dipartimento di Astronomia, Padova, Italy 797 Space Research Centre, Warsaw, Poland Space Research Centre, Warsaw, Poland Space Research Center, Warsaw, Poland 798 Catania, Osservatorio Astrofisico, Catania, Italy Catania, Osservatorio Astrofisico, Catania, Italy 799 Tokyo Metropolitan Univ., Tokyo, Japan Tokyo Metropolitan Univ., Tokyo, Japan 800 Ilinois Univ. at Urbana-Champaign, Urbana, IL, US Ilinois Univ. at Urbana-Champaign, Urbana, IL, US 801 Arcetri Osservatorio Astrofisico, Florence, Italy Arcetri Osservatorio Astrofisico, Florence, Italy 802 Big Bear Solar Astronomy, Pasadena, CA, US Big Bear Solar Astronomy, Pasadena, CA, US 803 Figl Observatory for Astrophysics, Vienna, Austria Figl Observatory for Astrophysics, Vienna, Austria 804 Haystack Observatory, Westford Haystack Observatory, Westford 805 Westerbork, Radiosterrewacht, Zwiggelte, Netherlands Westerbork, Radiosterrewacht Zwiggelte, Netherlands Westerbork, Radiosterrenwacht Zwiggelte, Netherlands Westerbork, Radiosterrewacht, Zwiggelte, Netherlands Westerbork, Radiosterrewacht Zwiggelte, Netherlands Westerbork, Radiosterrenwacht Zwiggelte, Netherlands Westerbork, Radiosterrewacht, Zwiggelte, Netherlands 806 Quebec, Observatoire Astronomique, Quebec, Canada Quebec, Observatoire Astronomique, Quebec, Canada 807 Sternberg Astronomical Institute, Moscow, Russia Sternberg Astronomical Institute, Moscow, Russia 808 Niels Bohr Institute, Tollose, Denmark Niels Bohr Institute, Tollose, Denmark 809 Yerevan Physics Institute, Yerevan, Armenia Yerevan Physics Institute, Yerevan, Armenia 810 Laboratorium voor Ruimteonderzoek, Utrecht, Netherlands Laboratorium voor Ruimteonderzoek, Utrecht, Netherlands 811 Danish Space Research Institute, Lyngby, Denmark Danish Space Research Institute, Lyngby, Denmark 812 Institute of Theoretical Astrophysics, Oslo, Norway Institute of Theoretical Astrophysics, Oslo, Norway 813 CCAST, Center of Astronomy and Astrophysics CCTS, Center of Astronomy and Astrophysics CCAST, Center of Astronomy and Astrophysics CAAST, Center of Astronomy and Astrophysics 814 Vicolo dell'Osseratorio, Padova, Italy Vicolo dell'Osseratorio, Padova, Italy 815 Charles Univ., Svedska, Czech Republic Charles Univ., Svedska, Czech Republic 816 Missouri-St. Louis, University, St. Louis Missouri-St. Louis, University, St. Louis 817 Institut d'Estudis Catalans, Barcelona, Spain Institut d'Estudis Catalans, Barcelona, Spain 818 Chalmers Tekniska Hogskola, Goteborg, Sweden Chalmers Tekniska Hogskola, Goteborg, Sweden 819 Specola Vaticana, Vatican City State Specola Vaticana, Vatican City State 820 Istituto TESRE/CNR, Bologna, Italy Istituto TESRE/CNR, Bologna, Italy Istituto TESRE, CNR, Bologna, Italy 821 University of Delhi, New Delhi, India University of Delhi, New Delhi, India 822 University of Helsinki, Helsinki, Finland University of Helsinki, Helsinki, Finland 823 Cardiff, Univ. College, United Kingdom Cardiff, Univ. College, United Kingdom 824 Institut d'Estudis Catalans Institut d'Estudis Catalans 825 Benedictine College, Atchison Benedictine College, Atchison 826 Fernbank Science Center, Atlanta, Ga. Fernbank Science Center, Atlanta, Ga. Fernbank Science Center, Atlanta, GA 827 Instituto de Astronomia, Mexico, Mexico Instituto de Astronomia, Mexico, Mexico 828 Copernicus Astronomical Center, Torun, Poland Copernicus Astronomical Center, Torun, Poland 829 Wellesley College, Wellesley, MA Wellesley College, Wellesley, MA 830 University of Tokyo, Mitaka, Tokyo, Japan University of Tokyo, Mitaka, Tokyo, Japan 831 Purdue Univ., West Lafayette, IN, US Purdue Univ., West Lafayette, IN, US 832 Inst. d'Astrophysique Spatiale, Orsay, France Inst. d'Astrophysique Spatiale, Orsay, France 833 Lau Kuei Huat/S/Pte., Ltd., Singapore Lau Kuei Huat/S/Pte., Ltd., Singapore 834 CNR, Ist. di Cosmo-Geofisica CNR, Ist. di Cosmo-Geofisica 835 California State College, San Bernardino, CA California State College, San Bernardino, CA 836 Aix-Marseille I, Universite, Marseille, France Aix-Marseille I, Universite, Marseille, France 837 Niels Bohr Inst. for Astronomy, Denmark Niels Bohr Inst. for Astronomy, Denmark 838 Amsterdam, Universitiet, Amsterdam, Netherlands Amsterdam, Universitiet, Amsterdam, Netherlands Amsterdam, Universitet, Amsterdam, Netherlands Amsterdam Universiteit, Amsterdam, Netherlands 839 Univ. of Amsterdam, Amsterdam, Netherlands Univ. of Amsterdam, Amsterdam, Netherlands 840 Marseille, Observatoire, France Marseille, Observatoire, France 841 Leiden, State University, Observatory, Netherlands Leiden, State University, Observatory, Netherlands 842 University of Durham, Durham, England, UK University of Durham, Durham, England, UK University of Durham, Durham, England, GB 843 University of Alabama, Tuscaloosa, Alabama, US University of Alabama, Tuscaloosa, Alabama, US 844 University of Leeds, Leeds, UK University of Leeds, Leeds, UK 845 Catholic University of America, Washington Catholic University of America, Washington 846 Turku Univ. Observatory, Finland Turku Univ. Observatory, Finland 847 Institute for Molecular Science, Okazaki, Japan Institute for Molecular Science, Okazaki, Japan 848 ESA, European Space Research and Technology Centre, Noordwijk ESA, European Space Research and Technology Centre, Noordwijk 849 Fonds National de la Recherche Scientifique, Brussels, Belgium Fonds National de la Recherche Scientifique, Brussels, Belgium 850 Istituto ed Osservatorio Astronomico, Palermo, Italy Istituto ed Osservatorio Astronomico, Palermo, Italy 851 Universite de Lausanne, Chavannes-des-Bois, Switzerland Universite de Lausanne, Chavannes-des-Bois, Switzerland 852 Universities Space Research Association, Washington, DC, US Universities Space Research Association, Washington, DC, US 853 Lebedev Physical Institute, Moscow, Russia Lebedev Physical Institute, Moscow, Russia 854 Monterey Inst. for Research in Astronomy, CA Monterey Inst. for Research in Astronomy, CA 855 New Mexico State University, Las Cruces, NM, US New Mexico State University, Las Cruces, NM, US 856 International Earth Rotation Service, Paris, France International Earth Rotation Service, Paris, France 857 NASA, Infrared Telescope Facility, Honolulu, HI NASA, Infrared Telescope Facility, Honolulu, HI 858 Fermi National Accelerator Laboratory, Batavia, IL, US Fermi National Accelerator Laboratory, Batavia, IL, US 859 Mathematical Science Consultants, Inc., Greenbelt, MD Mathematical Science Consultants, Inc., Greenbelt, MD 860 Copenhagen University, Observatory, Tollose, Denmark Copenhagen University, Observatory, Tollose, Denmark Copenhagen University, Observatory, Tollose, Denmark 861 Chalmers Univ. of Technology, Goteborg, Sweden Chalmers Univ. of Technology, Goteborg, Sweden 862 Centre de Physique Theorique, Palaiseau, France Centre de Physique Theorique, Palaiseau, France 863 Paul Wild Observatory, Narrabri, Australia Paul Wild Observatory, Narrabri, Australia 864 British Aerospace Australia, Ltd., Salisbury British Aerospace Australia, Ltd., Salisbury 865 Osaka University of Education, Osaka, Japan Osaka University of Education, Osaka, Japan 866 Lawrence Berkeley Laboratory, Berkeley, CA Lawrence Berkeley Laboratory, Berkeley, CA 867 Royal Greenwich Observatory, Santa Cruz de la Palma, Spain Royal Greenwich Observatory, Santa Cruz de la Palma, Spain Royal Greenwich Observatory, Santa Cruz de La Palma, Spain 868 St. Mary's Univ., Halifax, Nova Scotia, Canada St. Mary's Univ., Halifax, Nova Scotia, Canada 869 Carnegie Inst. of Washington, Pasadena, CA, US Carnegie Inst. of Washington, Pasadena, CA, US 870 Universidade Federal do Rio Grande do Sul, Brazil Universidade Federal do Rio Grande do Sul, Brazil Universidade Federal Rio, Grande do Sul, Brazil 871 Sterrewacht Leiden, PO Box 9513, 2300 RA Leiden, The Netherlands Sterrewacht Leiden, PO Box 9513, 2300 RA Leiden, The Netherlands 872 University of Birmingham, Birmingham, UK University of Birmingham, Birmingham, UK 873 University of Victoria, Victoria, BC, Canada University of Victoria, Victoria, BC, Canada 874 University of Massachusetts, Amhurst, MA, US University of Massachusetts, Amhurst, MA, US 875 University of New Mexico, Albuquerque, NM, US University of New Mexico, Albuquerque, NM, US 876 University of Notre Dame, Notre Dame, IN, US University of Notre Dame, Notre Dame, IN, US 877 University of Aarhus, Arhus, Denmark University of Aarhus, Arhus, Denmark 878 University of Virginia, Charlottesville, VA, US University of Virginia, Charlottesville, VA, US 879 University of Georgia, Athens, GA, US University of Georgia, Athens, GA, US 880 University of Califonia, Berkeley, CA, US University of Califonia, Berkeley, CA, US 881 University of Kentucky, Lexington, KY, US University of Kentucky, Lexington, KY, US 882 Unviersity of Arizona, Tucson, Arizona, US Unviersity of Arizona, Tucson, Arizona, US University of Arizona, Tuscon, Arizona, US 883 University of Illinois, Urbana, Illinois, US University of Illinois, Urbana, Illinois, US Unviersity of Illinois, Urbana, Illinois, US 884 University of St. Andrews, Fife, Scotland, UK University of St. Andrews, Fife, Scotland, UK 885 University of California, Los Angeles, California, US University of California, Los Angeles, California, US 886 University of Puerto Rico, Rio Piedras, PR University of Puerto Rico, Rio Piedras, PR 887 University of Cape Town, Cape Town, South Africa University of Cape Town, Cape Town, South Africa 888 University of Potsdam, Potsdam, Germany University of Potsdam, Potsdam, Germany 889 University Observatory, Glasgow, Scotland, UK University Observatory, Glasgow, Scotland, UK 890 University of Sydney, NSW, Australia University of Sydney, NSW, Australia 891 Fraunhofer Institut, Freiburg im Breisgau, West Germany Fraunhofer Institut, Freiburg im Breisgau, West Germany Fraunhofer-Institut, Freiburg im Breisgau, West Germany Fraunhofer Institut, Freiburgh im Breisgau, West Germany 892 Kapteyn Astronomical Institute, Groningen, Netherlands Kapteyn Astronomical Institute, Groningen, Netherlands 893 Amsterdam, Universiteit, Amsterdam, Netherlands Amsterdam, Universiteit, Amsterdam, Netherlands 894 Instytut Badan Jadrowych, Lodz, Poland Instytut Badan Jadrowych, Lodz, Poland 895 Herzberg Institute of Astrophysics, Victoria, BC, Canada Herzberg Institute of Astrophysics, Victoria, BC, Canada Herzberg Inst. of Astrophysics, Victoria, BC, Canada 896 Bordeaux I, Universite, Talence, Gironde, France Bordeaux I, Universite, Talence, Gironde, France 897 Forsvarets Forsoks Institutt, Kjeller, Norway Forsvarets Forsoks Institutt, Kjeller, Norway 898 Hebrew Univ. of Jerusalem, Jerusalem, Israel Hebrew Univ. of Jerusalem, Jerusalem, Israel 899 Eureka Scientific, Oakland, California, US Eureka Scientific, Oakland, California, US 900 Catalunya, Universitat Politecnica, Barcelona, Spain Catalunya, Universitat Politecnica, Barcelona, Spain 901 University of Toronto, Mississauga, Ontario, Canada University of Toronto, Mississauga, Ontario, Canada 902 University of Waterloo, Waterloo, Ontario, Canada University of Waterloo, Waterloo, Ontario, Canada 903 University of Electro-Communications, Chofu, Japan University of Electro-Communications, Chofu, Japan 904 University of Trondheim, Dragvoll, Norway University of Trondheim, Dragvoll, Norway 905 University of Calgary, Calgary, Alberta, Canada University of Calgary, Calgary, Alberta, Canada 906 Universita di Napoli 'Federico II', Napoli, Italy Universita di Napoli 'Federico II', Napoli, Italy Universita di Napoli Federico II, Napoli, Italy 907 University College, Belfield, Dublin, Ireland University College, Belfield, Dublin, Ireland 908 Trieste, Osservatorio Astronomico, Italy Trieste, Osservatorio Astronomico, Italy 909 Univ. of Pittsburg, Pittsburg, PA, US Univ. of Pittsburg, Pittsburg, PA, US 910 Univ. of California, Santa Barbara, CA, US Univ. of California, Santa Barbara, CA, US 911 University of Hawaii at Manoa, Honolulu University of Hawaii at Manoa, Honolulu 912 University of North Carolina, Chapel Hill, NC, US University of North Carolina, Chapel Hill, NC, US 913 University of Illinois, Champaign, Urbana, IL, US University of Illinois, Champaign, Urbana, IL, US 914 Sweet Briar College, Sweet Briar, VA, US Sweet Briar College, Sweet Briar, VA, US 915 Univ. Libre de Bruxelles, Bruxelles, Belgium Univ. Libre de Bruxelles, Bruxelles, Belgium 916 Universitat de Barcelona, Barcelona, Spain Universitat de Barcelona, Barcelona, Spain 917 University College, Dublin, Republic of Ireland University College, Dublin, Republic of Ireland 918 University of Manchester, Manchester, UK University of Manchester, Manchester, UK 919 Universite de Lausanne, Chavannes-des Bois, Switzerland Universite de Lausanne, Chavannes-des Bois, Switzerland 920 Univ. of Amsterdam, Amsterdam, The Netherlands Univ. of Amsterdam, Amsterdam, The Netherlands 921 Queensland, University, Brisbane, Australia Queensland, University, Brisbane, Australia 922 Cornell University, Ithaca, New York, US Cornell University, Ithaca, New York, US 923 Rutgers University, Piscataway, N.J. Rutgers University, Piscataway, N.J. 924 Sussex Univ., Brighton, United Kingdom Sussex Univ., Brighton, United Kingdom 925 Saint Andrews, University Observatory, Scotland Saint Andrews, University Observatory, Scotland Saint Andrews, University, Observatory, Scotland 926 Texas A & M University, College Station, Tex. Texas A & M University, College Station, Tex. 927 University of Canterbury, Christchurch, New Zealand University of Canterbury, Christchurch, New Zealand 928 Harvard College Observatory, Cambridge, Mass. Harvard College Observatory, Cambridge, Mass. Harvard College Observatory, Cambridge, MA 929 Lyon I, Universite, Villeurbanne, Rhone, France Lyon I, Universite, Villeurbanne, Rhone, France 930 Catholic University of America, Washington, DC Catholic University of America, Washington, DC 931 Lille I, Universite, Villeneuve d'Ascq, Nord, France Lille I, Universite, Villeneuve d'Ascq, Nord, France 932 Universidad Autonoma de Madrid, Madrid, Spain Universidad Autonoma de Madrid, Madrid, Spain 933 National Observatory of Athens, Athens, Greece National Observatory of Athens, Athens, Greece 934 Computer Sciences Corp., Astronomy Dept., Greenbelt, MD Computer Sciences Corp., Astronomy Dept., Greenbelt, MD 935 Observatorio del Roque de los Muchachos, La Palma, Spain Observatorio del Roque de los Muchachos, La Palma, Spain 936 North Carolina, University, Chapel Hill, N.C. North Carolina, University, Chapel Hill, N.C. 937 Pontificia Universidad Catolica de Chile, Santiago Pontificia Universidad Catolica de Chile, Santiago 938 Obserwatorium Astronomiczne, Wroclaw, Poland Obserwatorium Astronomiczne, Wroclaw, Poland 939 Torino, Osservatorio Astronomico, Pino Torinese Torino, Osservatorio Astronomico, Pino Torinese 940 La Plata, Observatorio Astronomico, Argentina La Plata, Observatorio Astronomico, Argentina 941 University of Birmingham, Edgbaston, Birmingham, UK University of Birmingham, Edgbaston, Birmingham, UK 942 Communications Research Lab., Koganei, Japan Communications Research Lab., Koganei, Japan 943 Lawrence Berkeley Lab., Berkeley Lawrence Berkeley Lab., Berkeley 944 USAF, Space Div., Los Angeles Air Force Station, CA USAF, Space Div., Los Angeles Air Force Station, CA 945 NASA, Marshall Space Flight Center, Space Science Laboratory NASA, Marshall Space Flight Center, Space Science Laboratory 946 Southwest Research Institute, San Antonio, TX Southwest Research Institute, San Antonio, TX 947 Laboratory for Space Research, Groningen, Netherlands Laboratory for Space Research, Groningen, Netherlands 948 University Space Research Association, Greenbelt, MD Universities Space Research Association, Greenbelt, MD University Space Research Association, Greenbelt, MD 949 A.F. Ioffe Institute of Physics and Technology, St. Petersburg, Russia A.F. Ioffe Institute of Physics and Technology, St. Petersburg, Russia 950 Massachusetts Institute of Technology, Westford, MA, US Massachusetts Institute of Technology, Westford, MA, US 951 Massachusetts Institute of Technology, Cambridge, Massachusetts, US Massachusetts Institute of Technology, Cambridge, Massachusetts, US 952 Space Science Dept. of ESA, Noordwijk, The Netherlands Space Science Dept. of ESA, Noordwijk, The Netherlands 953 Jamieson Science and Engineering, Inc., Scotts Valley, CA Jamieson Science and Engineering, Inc., Scotts Valley, CA Jamieson Science & Engineering, Inc., Scotts Valley, CA 954 University of California at Santa Barbara, Santa Barbara, CA, US University of California at Santa Barbara, Santa Barbara, CA, US 955 International Centre for Relativistic Astrophysics, Rome, Italy International Centre for Relativistic Astrophysics, Rome, Italy International Center for Relativistic Astrophysics, Rome, Italy 956 Laboratoire d'Astrophsiqure de Toulouse, Toulouse, France Laboratoire d'Astrophsiqure de Toulouse, Toulouse, France 957 Institute for Astronomy, Honolulu, Hawaii, US Institute for Astronomy, Honolulu, Hawaii, US 958 National Bureau of Standards, Gaithersburg, MD National Bureau of Standards, Gaithersburg, Md. National Bureau of Standards, Gaithersburg, MD 959 Sternberg Astronomical Inst., Moscow, Russia Sternberg Astronomical Inst., Moscow, Russia 960 Radioastronomisches Institut der Univ. Bonn, Bonn, Germany Radioastronomisches Institut der Univ. Bonn, Bonn, Germany 961 Univ. of Massachusetts, Amherst, MA, US Univ. of Massachusetts, Amherst, MA, US 962 Astrophysikalisches Institut Potsdamm, Potsdam, Germany Astrophysikalisches Institut Potsdamm, Potsdam, Germany Astrophysikalisches Institut Potsdam, Potsdam, Germany 963 U.S. Navy, Naval Research Lab., Washington U.S. Navy, Naval Research Lab., Washington 964 Mathematical Science Consultants, Inc., Greenbelt, MD, US Mathematical Science Consultants, Inc., Greenbelt, MD, US 965 Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany 966 Institut fuer Theoretische Physik und Sternwarte, Kiel, Germany Institut fuer Theoretische Physik und Sternwarte, Kiel, Germany Inst. fuer Theoretische Physik und Sternwarte, Kiel, Germany 967 Haystack Observatory, Massachusetts Inst. of Tech., Westford, MA, US Haystack Observatory, Massachusetts Inst. of Tech., Westford, MA, US 968 Akademiia Nauk SSSR, Institut Prikladnoi Fiziki, Gorki, USSR Akademiia Nauk SSSR, Institut Prikladnoi Fiziki, Gorki, USSR 969 Space Research Astronomical Observatory, Utrecht, Netherlands Space Research Astronomical Observatory, Utrecht, Netherlands 970 Kapteyn Institute, Groningen 9700 AV, the Netherlands Kapteyn Institute, Groningen 9700 AV, the Netherlands Kapteyn Institute, Groningen 9700 AV, The Netherlands 971 Academy of Sciences of the Czech Republic, Ondrejov, Czech Republic Academy of Sciences of Czech Republic, Ondrejov, Czech Republic Academy of Sciences of the Czech Republic, Ondrejov, Czech Republic 972 Polytechnic Inst. & State Univ., Blacksburg, VA, US Polytechnic Inst. & State Univ., Blacksburg, VA, US 973 Massachusetts Inst. of Technology, Cambridge, MA, US Massachusetts Inst. of Technology, Cambridge, MA, US Massachusetts Inst.of Technology, Cambridge, MA, US Massachusetts Insitute of Technology, Cambridge, MA, US 974 University of Wisconsin-Madison, Madison, WI, US University of Wisconsin-Madison, Madison, WI, US 975 Universities Space Research Association, Washington, DC Universities Space Research Association, Washington, DC 976 University of St. Andrews, St. Andrews, Scotland University of St. Andrews, St. Andrews, Scotland 977 Atmospheric and Environmental Research, Inc., Cambridge, MA Atmospheric and Environmental Research, Inc., Cambridge, MA 978 Catholic Univ. of America, Washington, DC, US Catholic Univ. of America, Washington, DC, US 979 University of Manitoba, Winnipeg, Manitoba, Canada University of Manitoba, Winnipeg, Manitoba, Canada 980 University of Colorado, Boulder, Colorado, US University of Colorado, Boulder, Colorado, US 981 Universite de Montreal, Montreal, Quebec, Canada Universite de Montreal, Montreal, Quebec, Canada 982 Observatories of the Carnegie Institution, Pasadena, CA Observatories of the Carnegie Institution, Pasadena, CA 983 University of California, Santa Cruz, Santa Cruz, CA, US University of California, Santa Cruz, Santa Cruz, CA, US University of California at Santa Cruz, Santa Cruz, CA, US University of California, Santa Cruz, Santa Cruz, CA, US University of California at Santa Cruz, Santa Cruz, CA, US 984 University of Wales College of Cardiff, Cardiff, UK University of Wales College of Cardiff, Cardiff, UK 985 Kernforschungszentrum Karlsruhe GmbH, Federal Republic of Germany Kernforschungszentrum Karlsruhe GmbH, Federal Republic of Germany 986 Lick Observatory, University of California, Santa Cruz, CA 95064, USA Lick Observatory, University of California, Santa Cruz, CA 95064, USA UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA 987 SISSA-International School of Advanced Studies, Trieste, Italy SISSA-International School of Advanced Studies, Trieste, Italy SISSA-International School for Advanced Studies, Trieste, Italy 988 Leiden Observatory, PO Box 9513, 2300 RA Leiden, The Netherlands Leiden Observatory, PO Box 9513, 2300 RA Leiden, The Netherlands 989 Palermo, Osservatorio Astronomico, Italy Palermo, Osservatorio Astronomico, Italy 990 Northeast Radio Observatory Corp., Westford, Mass. Northeast Radio Observatory Corp., Westford, Mass. 991 Eotvos Lorand University, Budapest, Hungary Eotvos Lorand University, Budapest, Hungary 992 Univ. of Cape Town, Cape Town, South Africa Univ. of Cape Town, Cape Town, South Africa 993 Physics Department, University of Durham, Durham DH1 3LE, UK Physics Department, University of Durham, Durham DH1 3LE, UK 994 Royal Australian Air Force Academy, Parkville, Victoria, Australia Royal Australian Air Force Academy, Parkville, Victoria, Australia 995 Univ. of New South Wales, Canberra, Australia Univ. of New South Wales, Canberra, Australia Univ. of South Wales, Canberra, Australia 996 University of Queensland, Queensland, Australia University of Queensland, Queensland, Australia 997 Department of Physics, Keble Road, Oxford OX1 3RH, UK Department of Physics, Keble Road, Oxford OX1 3RH, UK Department of Physics, Keble Road, Oxford OX1 3RH 998 Melbourne University, Parkville, Victoria, Australia Melbourne University, Parkville, Victoria, Australia 999 Copenhagen University Observatory, Oster Voldgade 3, DK-1350 Copenhagen, Denmark Copenhagen University Observatory, Oster Voldgade 3, DK-1350 Copenhagen, Denmark 1000 University of Sydney, New South Wales, Australia University of Sydney, New South Wales, Australia 1001 Radio Sterrewacht, Dwingeloo, Postbus 2, 7990 AA Dwingeloo, The Netherlands Radio Sterrewacht, Dwingeloo, Postbus 2, 7990 AA Dwingeloo, The Netherlands 1002 Glavnaia Astronomicheskaia Observatoriia, Kiev, Ukrainian SSR Glavnaia Astronomicheskaia Observatoriia, Kiev, Ukrainian SSR 1003 Osaka University, Toyonaka, Osaka, Japan Osaka University, Toyonaka, Osaka, Japan 1004 Astronomisches Rechen-Inst., Heidelberg, Germany Astronomisches Rechen-Inst., Heidelberg, Germany 1005 Tokyo Metropolitan University, Tokyo, Japan Tokyo Metropolitan University, Tokyo, Japan 1006 Saint Mary's Univ., Halifax, Nova Scotia, Canada Saint Mary's Univ., Halifax, Nova Scotia, Canada 1007 Lausanne, Universite, Chavannes-des-Bois, Switzerland Lausanne, Universite, Chavannes-des-Bois, Switzerland Lausanne, Universite, Chavannes-de-Bois, Switzerland 1008 Copenhagen, University, Observatory, Denmark Copenhagen, University, Observatory, Denmark 1009 Korea Research Institute of Standard, Daejon, Korea Korea Research Institute of Standard, Daejon, Korea 1010 National Research Council of Canada, Ottawa, Ontario, Canada National Research Council of Canada, Ottawa, Ontario, Canada National Research Council of Canada, Ottawa, Ontario, Canada 1011 Radioastrofizicheskaia Observatoriia, Riga, Latvian SSR Radioastrofizicheskaia Observatoriia, Riga, Latvian SSR 1012 Laboratory for Space Research, Leiden, The Netherlands Laboratory for Space Research, Leiden, The Netherlands Laboratory for Space Research, Leiden, The Netherlands 1013 AN SSSR, Fiziko-Tekhnicheskii Institut, Leningrad, USSR AN SSSR, Fiziko-Tekhnicheskii Institut, Leningrad, USSR 1014 Carnegie Institute of Washington, Washington, DC, US Carnegie Institute of Washington, Washington, DC, US Carnegie Institute of Washington, Washingotn, DC, US 1015 International School for Advanced Studies, Trieste, Italy International School for Advanced Studies, Trieste, Italy 1016 Universities Space Research Association, Washington Universities Space Research Association, Washington 1017 Observatories of the Carnegie Institution of Washington, La Serena, Chile Observatories of the Carnegie Institution of Washington, La Serena, Chile The Observatories of the Carnegie Institution of Washington, La Serena, Chile 1018 Instituto Argentino de Radioastronomia, C.C. 5, 1894 Villa Elisa, Argentina Instituto Argentino de Radioastronomia, C.C. 5, 1894 Villa Elisa, Argentina 1019 CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina CONICET, Instituto de Astronomia y Fisica del Espacio, Buenoe Aires, Argentina 1020 Observatories of the Carnegie Inst. of Washington, Pasadena, CA, US Observatories of the Carnegie Inst. of Washington, Pasadena, CA, US 1021 Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA Center for Astrophysics, 60 Garden Street, Cambridge MA 02138, USA 1022 Sterrewacht Leiden, P.O. Box 9513, 2300 RA Leiden, The Netherlands Sterrewacht Leiden, P.O. Box 9513, 2300 RA Leiden, The Netherlands). Sterrewacht Leiden, PO Box 9513, NL-2300 RA Leiden, the Netherlands Sterrewacht Leiden, P.O. Box 9513, 2300 RA Leiden, The Netherlands 1023 Lab. for Space Research, Leiden, Netherlands Lab. for Space Research, Leiden, Netherlands 1024 Inst. fuer Kernphysik, Karlsruhe, Germany Inst. fuer Kernphysik, Karlsruhe, Germany 1025 Finnish Meteorological Institute, Helsinki, Finland Finnish Meteorological Institute, Helsinki, Finland 1026 Max-Planck-Inst. fuer Physik und Astrophysik, Garching Max-Planck-Inst. fuer Physik und Astrophysik, Garching 1027 ESA, Space Science Dept., Noordwijk, Netherlands ESA, Space Science Dept., Noordwijk, Netherlands ESA, Space Science Div., Noordwijk, Netherlands ESA, Space Science Dept., Nordwijk, Netherlands ESTEC, Space Science Dept., Noordwijk, Netherlands 1028 Inst. Argentino de Radioastronomia, Villa Elisa Inst. Argentino de Radioastronomia, Villa Elisa 1029 Sterrewacht Leiden, Huygens Laboratory, PO Box 9513, 2300 RA Leiden, The Netherlands Sterrewacht Leiden, Huygens Laboratory, PO Box 9513, 2300 RA Leiden, The Netherlands 1030 CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna CNR, Istituto di Technologie e Studio delle Radiazione Extraterrestri, Bologna, Italy CNR, Istituto di Technologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Technologie e Studio delle Radiazzioni Estraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio delle Radiazioni Extraterrestri, Florence, Italy CNR, Istituto Tecnologie e Studio delle Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio delle Radiazione Extraterrestri, Bologna, Italy 1031 Institut fuer Theoretische Astrophysik, Heidelberg, West Germany Institut fuer Theoretische Astrophysik, Heidelberg, West Germany 1032 National Central University, Chungli, Republic of China National Central University, Chungli, Republic of China 1033 North Pines Observatory, W. Bloomfield, MI, US North Pines Observatory, W. Bloomfield, MI, US 1034 Shanghai Observatory, People's Republic of China Shanghai Observatory, People's Republic of China 1035 Massachusetts Institute of Technology, Room 37-627, Cambridge, MA 02139, USA Massachusetts Institute of Technology, Room 37-627, Cambridge, MA 02139, USA 1036 China Center for Advanced Science and Technology, People's Republic of China Chinese Center for Advanced Sciences and Technology, People's Republic of China China Center for Advanced Science and Technology, People's Republic of China 1037 Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Netherlands Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Netherlands 1038 ESA, European Space Research and Technology Centre, Noordwijk, Netherlands ESA, European Space Research and Technology Centre, Noordwijk, Netherlands ESA, European Space Research and Technology Center, Noordwijk, Netherlands European Space Research and Technololgy Centre, Noordwij, Netherlands 1039 Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy 1040 Osservatorio Astronomico di Trieste, Via GB Tiepolo, 11, I-34131 Trieste, Italy Osservatorio Astronomico di Trieste, Via GB Tiepolo, 11, I-34131 Trieste, Italy 1041 Osservatorio Astronomico, via Zamboni 33, 40126 Bologna, Italy Osservatorio Astronomico, Via Zamboni 33, I-40126 Bologna, Italy Osservatorio Astronomico, via Zamboni 33, I-40126 Bologna, Italy Osservatorio Astronomico, Via Zamboni 33, I-40126, Bologna, Italy Osservatorio Astronomico, Via Zamboni 33, I-40125 Bologna, Italy Osservatorio Astronomico, via Zamboni 33, 40126 Bologna, Italy 1042 Osservatorio Astronomico di Brera, Via Bianchi 46, I-22055 Merate (LC), Italy Osservatorio Astronomico di Brera, Via Bianchi 46, I-22055 Merate (LC), Italy Osservatorio Astronomico di Brera, Via Bianchi 46, I-22055 Merate (CO), Italy 1043 Centre d'Estudis Avancats Blanes, Blanes, Spain Centre d'Estudis Avancats Blanes, Blanes, Spain 1044 Jamieson Science and Engineering, Inc., Palo Alto, CA Jamieson Science and Engineering, Inc., Palo Alto, CA 1045 Nauchno-Issledovatel'skii Radiofizicheskii Institut, Gorki, USSR Nauchno-Issledovatel'skii Radiofizicheskii Institut, Gorki, USSR 1046 The Queen's Univ. of Belfast, Belfast, Northern Ireland, UK The Queen's Univ. of Belfast, Belfast, Northern Ireland, UK The Queen's Univ. of Belfast, Belfast, North Ireland, UK 1047 Centro Astronomico de Yebes, Guadalajara Centro Astronomico de Yebes, Guadalajara 1048 Observatorie de Haute-Provence, St. Michel, France Observatorie de Haute-Provence, St. Michel, France 1049 Observatoire de Lyon, St. Genis Laval, France Observatoire de Lyon, St. Genis Laval, France Observatoire de Lyon, St. Genis-Laval, France Observatorie de Lyon, St-Genis-Laval, France 1050 Steward Observatory, Arizona Univ., Tucson, AZ, US Steward Observatory, Arizona Univ., Tucson, AZ, US 1051 Complejo Astronomico El Leoncito, San Juan, Argentina Complejo Astronomico El Leoncito, San Juan, Argentina Complejo Astronomico el Leoncito, San Juan, Argentina Complejo Astronomico EL Leoncito, San Juan, Argentina 1052 Univ. of Illinois at Urbana-Champaign, Urbana, IL, US Univ. of Illinois at Urbana-Champaign, Urbana, IL, US Univ. of Illinois at Urgana-Champaign, Urbana, IL, US 1053 Computer Technology Associates, Inc., Lanham, MD Computer Technology Associates, Inc., Lanham, MD 1054 Raman Research Institute, Bangalore 560080, India Raman Research Institute, Bangalore 560080, India 1055 Groningen, Rijksuniversiteit Groningen, Rijksuniversiteit 1056 National Astronomical Observatory National Astronomical Observatory 1057 Lewis and Clark College, Portland, OR Lewis and Clark College, Portland, OR 1058 Aichi University of Education, Kariya, Japan Aichi University of Education, Kariya, Japan 1059 Kyoto Pharmaceutical University, Japan Kyoto Pharmaceutical University, Japan 1060 Sachs-Freeman Associates, Inc., Bowie, MD Sachs-Freeman Associates, Inc., Bowie, MD Sachs/Freeman Associates, Inc., Bowie, MD 1061 Dartmouth College, Hanover, N.H. Dartmouth College, Hanover, N.H. 1062 Computer Sciences Corp., Silver Spring, Md. Computer Sciences Corp., Silver Spring, Md. 1063 Swarthmore College, Swarthmore, PA, US Swarthmore College, Swarthmore, PA, US 1064 Nizamiah Observatory, Hyderabad, India Nizamiah Observatory, Hyderabad, India 1065 Massachusetts Institute of Technology, Cambridge, MA, US Massachusetts Institute of Technology, Cambridge, MA, US 1066 IBM Scientific Center, Palo Alto, Calif. IBM Scientific Center, Palo Alto, Calif. 1067 King Saud Univ., Riyadh, Saudi Arabia King Saud Univ., Riyadh, Saudi Arabia 1068 Univ. of Chicago, Williams Bay, WI, US Univ. of Chicago, Williams Bay, WI, US 1069 Institute of Physical and Chemical Research, Saitama, Japan Institute of Physical and Chemical Research, Saitama, Japan The Institute of Physical and Chemical Research, Saitama, Japan 1070 Hawaii, University, Honolulu and Mauna Kea, HI Hawaii, University, Honolulu and Mauna Kea, HI 1071 Tokyo Gakugei Univ., Koganei, Tokyo, Japan Tokyo Gakugei Univ., Koganei, Tokyo, Japan 1072 Kyoto Sangyo Univ., Kyoto, Japan Kyoto Sangyo Univ., Kyoto, Japan 1073 Rutherford Appleton Lab., Chilton, UK Rutherford Appleton Lab., Chilton, UK 1074 Maria Mitchell Observatory, Nantucket, MA, US Maria Mitchell Observatory, Nantucket, MA, US 1075 Haverford College, Haverford, PA, US Haverford College, Haverford, PA, US 1076 Laboratori Nazionali INFN, Frascati, Italy Laboratori Nazionali INFN, Frascati, Italy 1077 Mont Megantic, Observatoire Astronomique Mont Megantic, Observatoire Astronomique 1078 ATNF, CSIRO, PO Box 76, Epping NSW 2121, Australia ATNF, CSIRO, PO Box 76, Epping NSW 2121, Australia 1079 Fred Lawrence Whipple Observatory, Amado, AZ Fred Lawrence Whipple Observatory, Amado, AZ 1080 Lausanne, Universite, Chavanne-des-Bois, Switzerland Lausanne, Universite, Chavanne-des-Bois, Switzerland 1081 Madurai-Kamaraj University, Madurai, India Madurai-Kamaraj University, Madurai, India 1082 University of Illinois, Urbana, IL, US University of Illinois, Urbana, IL, US 1083 University of Utah, Salt Lake City, UT, US University of Utah, Salt Lake City, UT, US 1084 NASA, Johnson Space Center NASA, Johnson Space Center 1085 Tasmania Univ., Hobart, Australia Tasmania Univ., Hobart, Australia 1086 Monash University, Melbourne, Australia Monash University, Melbourne, Australia 1087 Stockholm, Universitet, Stockholm Stockholm, Universitet, Stockholm 1088 Florida Atlantic Univ., Boca Raton Florida Atlantic Univ., Boca Raton 1089 Swarthmore College, Swarthmore, Pa. Swarthmore College, Swarthmore, PA Swarthmore College, Swarthmore, Pa. 1090 Buenos Aires, Universidad, Argentina Buenos Aires, Universidad, Argentina 1091 Strathclyde, University, Glasgow, Scotland Strathclyde, University, Glasgow, Scotland 1092 Pittsburgh, University, Pittsburgh, Pa. Pittsburgh, University, Pittsburgh, Pa. 1093 Oranim-University Division, Tivon, Israel Oranim-University Division, Tivon, Israel 1094 Washington University, Saint Louis, MO Washington University, Saint Louis, MO 1095 La Plata, Univ. Nacional, Argentina La Plata, Univ. Nacional, Argentina 1096 Wisconsin, University, Stevens Point, Wis. Wisconsin, University, Stevens Point, Wis. 1097 Smithsonian Institution, Amado, AZ, US Smithsonian Institution, Amado, AZ, US 1098 Niigata University, Niigata-shi, Japan Niigata University, Niigata-shi, Japan 1099 CNR, Istituto di Studio e Tecnologie sulle Radiazioni Extraterrestri, Italy CNR, Istituto di Studio e Tecnologie sulle Radiazioni Extraterrestri, Italy 1100 CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy CNR, Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy CNR, Ist. di Fisica dello Spazio Interplanetario, Frascati, Italy Istituto di Fisica dello Spazio Interplanetario, Frascati, Italy CNR, Istituto di Fisica Spazio Interplanetario, Frascati, Italy 1101 Bishop's Univ., Lennoxville, Canada Bishop's Univ., Lennoxville, Canada 1102 Computer Sciences Corp., Lanham-Seabrook, MD, US Computer Sciences Corp., Lanham-Seabrook, MD, US 1103 Hatfield Polytechnic, United Kingdom Hatfield Polytechnic, United Kingdom 1104 Clark Lake Radio Observatory, College Park, Md. Clark Lake Radio Observatory, College Park, Md. Clark Lake Radio Observatory, College Park, MD 1105 Grumman Aerospace Corp., Bethpage, NY Grumman Aerospace Corp., Bethpage, NY 1106 Washburn Observatory, Madison. WI Washburn Observatory, Madison. WI 1107 Beijing University, People's Republic of China Bejing University, People's Republic of China Beijing University, People's Republic of China Nanjing University, People's Republic of China Bejing University, People's Republic of China Beijing University, People's Republic of China Nanjing University, People's Republic of China 1108 Chungnam National Univ., Yusong-ku, Korea Chungnam National Univ., Yusong-ku, Korea 1109 Laboratory for Space Research Laboratory for Space Research 1110 Jet Propulsion Lab., Pasadena, CA, US Jet Propulsion Lab., Pasadena, CA, US 1111 Tohoku Univ., Aoba, Sendai, Japan Tohoku Univ., Aoba, Sendai, Japan 1112 Tokyo Inst. of Technology, Tokyo, Japan Tokyo Inst. of Technology, Tokyo, Japan 1113 British Astronomical Association, London, United Kingdom British Astronomical Association, London, United Kingdom 1114 National Center for Atmospheric Research, Boulder, Colo. National Center for Atmospheric Research, Boulder, Colo. 1115 National Centre for Radio Astrophysics, Poona, India National Centre for Radio Astrophysics, Poona, India 1116 International Center for Theoretical Physics International Center for Theoretical Physics International Centre for Theoretical Physics 1117 CNR, Centro Astronomia Infrarossa, Florence, Italy CNR, Centro Astronomia Infrarossa, Florence, Italy 1118 Computational Physics, Inc., Fairfax, VA, US Computational Physics, Inc., Fairfax, VA, US 1119 Darmstadt, Technische Hochschule, Federal Republic of Germany Darmstadt, Technische Hochschule, Federal Republic of Germany 1120 Astronomisches Rechen-Institut, Heidelberg, Federal Republic of Germany Astronomisches Rechen-Institut, Heidelberg, Federal Republic of Germany Astronomisches Recheninstitut, Heidelberg, Federal Republic of Germany 1121 Sternberg Astronomical Institute, Moscow University, Moscow, 119899, Russia Sternberg Astronomical Institute, Moscow University, Moscow, 119899, Russia 1122 Notre Dame Seishin University, Okayama, Japan Notre Dame Seishin University, Okayama, Japan 1123 Korea Astronomy Observatory, Taejon, Republic of Korea Korea Astronomy Observatory, Taejon, Republic of Korea 1124 Physics Department, The University, Durham DH1 3LE, UK Physics Department, The University, Durham DH1 3LE, UK 1125 Central Michigan University, Mount Pleasant, MI Central Michigan University, Mount Pleasant, MI 1126 Inst. Nacional de Astrofisica Optica y Electronica, Puebla, Mexico Inst. Nacional de Astrofisica Optical y Electronica, Puebla, Mexico Inst. Nacional de Astrofisica Optica y Electronica, Puebla, Mexico Inst. Nacional de Astrofisica, Optica y Electronica, Puebla, Mexico 1127 Dublin Institute for Advanced Studies, Republic of Ireland Dublin Institute for Advanced Studies, Republic of Ireland 1128 Inst. fuer Theoretische Physik & Sternwarte der Univ, Kiel, Germany Inst. fuer Theoretische Physik & Sternwarte der Univ, Kiel, Germany 1129 Nicolaus Copernicus Astronomical Center, Warsaw, Poland Nicolaus Copernicus Astronomical Center, Warsaw, Poland 1130 Institute for Defense Analyses, Alexandria, VA, US Institute for Defense Analyses, Alexandria, VA, US 1131 Akademiia Nauk SSSR, Fizicheskii Institut, Pushchino, USSR Akademiia Nauk SSSR, Fizicheskii Institut, Pushchino, USSR 1132 Berlin, Technische Univ., Germany Berlin, Technische Univ., Germany 1133 CNR, Unita di Ricerca di Padova-Asiago, Padua, Italy CNR, Unita di Ricerca di Padova-Asiago, Padua, Italy 1134 University of the West Indies, Kingston, Jamaica University of the West Indies, Kingston, Jamaica 1135 National Air and Space Museum, Washington, DC National Air and Space Museum, Washington, DC 1136 Univ. of Manchester, Cheshire, UK Univ. of Manchester, Cheshire, UK 1137 Aarne Karjalainen Observatory, Oulu, Finland Aarne Karjalainen Observatory, Oulu, Finland 1138 Western Washington University, Bellingham, Wash. Western Washington University, Bellingham, Wash. Western Washington University, Bellingham, WA 1139 University of Illinois at Urbana-Champaign, Urbana, IL, US University of Illinois at Urbana-Champaign, Urbana, IL, US 1140 University Observatory, Ostervoldgade 3, Copenhagen, Denmark University Observatory, Ostervoldgade 3, Copenhagen, Denmark 1141 Specola Vaticana, Castel Gandolfo, Vatican City State Specola Vaticana, Castel Gandolfo, Vatican City State 1142 National Optical Astronomy Observatories, Sunspot, NM, US National Optical Astronomy Observatories, Sunspot, NM, US 1143 American Association of Variable Star Observers, Cambridge, MA American Association of Variable Star Observers, Cambridge, MA 1144 Mullard Space Science Lab., Dorking, Surrey, UK Mullard Space Science Lab., Dorking, Surrey, UK 1145 Univ. of Virginia, Charlottsville, VA, US Univ. of Virginia, Charlottsville, VA, US Univ. of Virginia, Charlottesvill, VA, US 1146 Potchefstroom University for CHE, Potchefstroom, South Africa Potchefstroom University for CHE, Potchefstroom, South Africa 1147 University of Manchester, Macclesfield, Cheshire, UK University of Manchester, Macclesfield, Cheshire, UK 1148 Florida Atlantic University, Boca Raton, Fla. Florida Atlantic University, Boca Raton, Fla. 1149 Joint Astronomy Centre, 660 N. A`ohoku Place, Hilo, HI 96720, USA Joint Astronomy Centre, 660 N. A`ohoku Place, Hilo, HI 96720, USA Joint Astronomy Centre, 660 N. A'Ohoku Place, Hilo HI 96720, USA Joint Astronomy Centre, 660 N. A`ohoku Place, Hilo, Hawaii 96720, USA Joint Astronomy Centre, 600 N. A`ohoku Place, Hilo, HI 96720, USA Joint Astronomy Centre, 600 N. A `ohoku Place, Hilo, HI 96720, USA 1150 Virginia Polytechnic Inst. and State Univ., Blacksburg, VA, US Virginia Polytechnic Inst. and State Univ., Blacksburg, VA, US 1151 Catholic Univ. of America, Washington Catholic Univ. of America, Washington 1152 National Astronomical Observatory of Japan, Mitaka National Astronomical Observatory of Japan, Mitaka 1153 National Optical Astronomy Observatories, La Serena, Chile National Optical Astronomy Observatories, La Serena, Chile 1154 Department of Physics, Hirosaki University, Hirosaki 036, Japan Department of Physics, Hirosaki University, Hirosaki 036, Japan 1155 Instituto Nacional de Pesquisas Espaciais, Sao Paulo, Brazil Instituto Nacional de Pesquisas Espaciais, Sao Paulo, Brazil 1156 CNR, Centro di Astronomia Infrarossa, Florence, Italy CNR, Centro di Astronomia Infrarossa, Florence, Italy 1157 National Optical Astronomical Observatories, Tucson, AZ National Optical Astronomical Observatories, Tucson, AZ 1158 CNR, Istituto di Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy CNR, Istituto di Tecnologie e Studio Radiazioni Extraterrestri, Bologna, Italy 1159 Astrophysics, Department of Physics, Keble Road, Oxford OX1 3RH, UK Astrophysics, Department of Physics, Keble Road, Oxford OX1 3RH, UK 1160 Jet Proulsion Lab., California Inst. of Tech., Pasadena, CA, US Jet Proulsion Lab., California Inst. of Tech., Pasadena, CA, US Jet Propulsion Lab., California Inst. of Tech., Pasadena, MD, US 1161 Inst. Astronomico e Geofisico, Sao Paulo, Brazil Inst. Astronomico e Geofisico, Sao Paulo, Brazil 1162 Slovenska Akademia Vied, Astronomicky Ustav, Bratislava, Czechoslovakia Slovenska Akademia Vied, Astronomicky Ustav, Bratislava, Czechoslovakia Slovenska Akademiia Vied, Astronomicky Ustav, Bratislava, Czechoslovakia 1163 Universidad de las Islas Baleares, Palma de Mallorca, Spain Universidad de las Islas Baleares, Palma de Mallorca, Spain 1164 The Observatories of the Carnegie Inst. of Washington, Pasadena, CA, US The Observatories of the Carnegie Inst. of Washington, Pasadena, CA, US 1165 Ceskoslovenska Akademie Ved, Astronomicky Ustav, Ondrejov, Czechoslovakia Ceskoslovenska Akademie Ved, Astronomicky Ustav, Ondrejov, Czechoslovakia Ceskoslovenska Akademie Ved, Astronomicky Ustav, Prague, Czechoslovakia 1166 SISSA - International School of Advanced Studies, Trieste, Italy SISSA - International School of Advanced Studies, Trieste, Italy SISSA - International School for Advanced Studies, Trieste, Italy 1167 Institute of Astronomy, University of Hawaii, Honolulu, HI, US Institute of Astronomy, University of Hawaii, Honolulu, HI, US 1168 Nuffield Radio Astronomy Labs., Manchester Univ., Manchester, UK Nuffield Radio Astronomy Labs., Manchester Univ., Manchester, UK 1169 National Optical Astronomical Observatories, La Serena, Chile National Opical Astronomy Observatories, La Serena, Chile Nat. Optical Astronomical Observatories, La Serena, Chile National Optical Astronomical Observatories, La Serena, Chile 1170 Inst. fuer Theoretische Physik und Sternwarte und Univ, Kiel, Germany Inst. fuer Theoretische Physik und Sternwarte und Univ, Kiel, Germany 1171 Virginia Polytechnic Institute and State University, Blacksburg, VA Virginia Polytechnic Institute and State University, Blacksburg, VA Virginia, Polytechnic Institute and State University, Blacksburg, VA 1172 National Optical Astronomy Observatories, Tucson, AZ, US National Optical Astronomy Observatories, Tucson, AZ, US 1173 Instituto Nacional de Pesquisas Espacias, Sao Jose dos Campos, Brazil Instituto Nacional de Pesquisas Espacias, Sao Jose dos Campos, Brazil Instituto Nacional de Pesquisas Espaciais, Sao Jose dos Campos, Brazil 1174 Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands Kapteyn Astronomical Institute, Postbus 800, 9700 AV, Groningen, The Netherlands Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen, The Netherlands Kapteyn Astronomical Institute, PO Box 800, NL-9700 AV Groningen, The Netherlands 1175 Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Amsterdam, Netherlands Nationaal Instituut voor Kernfysica en Hoge Energie Fysica, Amsterdam, Netherlands 1176 Inst. d'Astrophysique Spatiale, Verrieres-le-Buisson, France Inst. d'Astrophysique Spatiale, Verrieres-le-Buisson, France 1177 Astro Space Center, Lebedev Physical Inst., Moscow, Russia Astro Space Center, Lebedev Physical Inst., Moscow, Russia 1178 NASA, Ames Research Center, Space Sciences Div., Moffett Field NASA, Ames Research Center, Space Sciences Div., Moffett Field 1179 Academy of Sciences, Physical Institute, Moscow, Russia Academy of Sciences, Physical Institute, Moscow, Russia 1180 Observatorio del Roque de los Muchachos, Santa Cruz de la Palma, Spain Observatorio del Roque de los Muchachos, Santa Cruz de la Palma, Spain Observatorio del Roque de los Muchachos, Santa Cruz de La Palma, Spain Observatorio de Roque de los Muchachos, Santa Cruz de la Palma, Spain Observatorio del Roque de Los Muchachos, Santa Cruz de La Palma, Spain Observatorio Roque de Los Muchachos, Santa Cruz de la Palma, Spain 1181 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ Royal Greenwich Observatory, Madingley Road, Cambridge OB3 0EZ 1182 Instituto Nacional de Astrofisica, Optica y Electronica, Puebla, Mexico Instituto Nacional de Astrofisica, Optica y Electronica, Puebla, Mexico Instituto Nacional de Astrofisica Optica y Electronica, Puebla, Mexico Instituto Nacional de Astrofisica, Optica, y Electronica, Puebla, Mexico 1183 Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, The Netherlands Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, The Netherlands Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, Netherlands 1184 Astronomical Instituut 'Anton Pannekoek', Amsterdam, Netherlands Astronomisch Institut 'Anton Pannekoek', Amsterdam, Netherlands Astronomical Instituut 'Anton Pannekoek', Amsterdam, Netherlands Astronomical Inst. 'Anton Pannekoek', Amsterdam, Netherlands 1185 Universities Space Research Association, Greenbelt, MD, US Universities Space Research Association, Greenbelt, MD, US 1186 New Mexico State University, Las Cruces, N. Mex. New Mexico State University, Las Cruces, N. Mex. 1187 National Central University, Chung-Li, Republic of China National Central University, Chung-Li, Republic of China 1188 NASA, Goddard Space Flight Center, High Energy Physics Group, Greenbelt, Md. NASA, Goddard Space Flight Center, High Energy Physics Group, Greenbelt, Md. NASA, Goddard Space Flight Center, High Energy Astrophysics Group, Greenbelt, Md. 1189 International Center for Theoretical Physics, Trieste, Italy International Center for Theoretical Physics, Trieste, Italy International Centre for Theoretical Physics, Trieste, Italy 1190 Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA 02138, USA 1191 Dominion Radio Astrophysical Observatory, PO Box 248, Penticton, BC V2A 6K3, Canada Dominion Radio Astrophysical Observatory, PO Box 248, Penticton, BC V2A 6K3, Canada 1192 California, University, Los Alamos Scientific Laboratory, Los Alamos, N. Mex. California, University, Los Alamos Scientific Laboratory, Los Alamos, N. Mex. California, University, Los Alamos Scientific Laboratory, Los Alamos, NM 1193 NASA, Ames Research Center, Astrophysics Branch, Moffett Field, Calif. NASA, Ames Research Center, Astrophysics Branch, Moffett Field, Calif. 1194 Herzberg Inst. of Astrophysics, Ottawa, Ontario, Canada Herzberg Inst. of Astrophysics, Ottawa, Ontario, Canada 1195 Clark Lake Radio Observatory, Borrego Springs, CA Clark Lake Radio Observatory, Borrego Springs, CA 1196 Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia Anglo-Australian Observatory, PO Box 296, Epping, NSW 2121, Australia Anglo-Australian Observatory, PO Box 296 Epping, NSW 2121, Australia Anglo-Australian Observatory, P.O. Box 296, Epping NSW 2121, Australia 1197 Instituto Nacional de Astrofisica, Puebla, Mexico Instituto Nacional de Astrofisica, Puebla, Mexico Instituo National de Astrofisica, Puebla, Mexico 1198 North Carolina State Univ., Raleigh, NC, US North Carolina State Univ., Raleigh, NC, US 1199 Southwest Research Inst., Boulder, CO, US Southwest Research Inst., Boulder, CO, US 1200 Interferometrics, Inc., Greenbelt, MD Interferometrics, Inc., Greenbelt, MD Interferometrics Inc., Greenbelt, MD Interferometrics, Inc., Greenbelt, MD Interferometrics Inc., Greenbelt, MD 1201 NBS, Quantum Physics Div., Boulder, CO NBS, Quantum Physics Div., Boulder, CO NIST, Quantum Physics Div., Boulder, CO 1202 Anglo-Australian Observatory, Epping Anglo-Australian Observatory, Epping 1203 Mount Allison University, Sackville, Canada Mount Allison University, Sackville, Canada 1204 Sonoma State Univ., Rohnert Park, CA, US Sonoma State Univ., Rohnert Park, CA, US 1205 Tel Aviv University, Ramat Aviv, Israel Tel Aviv University, Ramat Aviv, Israel 1206 Western Ontario Univ., London Western Ontario Univ., London Western Ontario Univ., London 1207 School of Cosmic Physics, Dublin, Ireland School of Cosmic Physics, Dublin, Ireland 1208 U.S. Navy, Naval Research Lab. U.S. Navy, Naval Research Lab. 1209 Computer Sciences Corp., Greenbelt, Md. Computer Sciences Corp., Greenbelt, Md. 1210 Drake University, Des Moines, IA, US Drake University, Des Moines, IA, US 1211 Laserdot, Marcoussis, France Laserdot, Marcoussis, France 1212 Univ. Space Research Association, Washington Univ. Space Research Association, Washington 1213 Universities Space Research Association Universities Space Research Association 1214 Max-Planck-Inst. fuer Kernphysik, Heidelberg, Germany Max-Planck-Inst. fuer Kernphysik, Heidelberg, Germany Max Planck Inst. fuer Kernphysik, Heidelberg, Germany 1215 Centre for High-energy Astrophysics, Netherlands Centre for High-energy Astrophysics, Netherlands Centre for High-Energy Astrophysics, Netherlands Centre for High-energy Astrophysics, Netherlands Centre for High-Energy Astrophysics, Netherlands 1216 Nagoya University, Chikusa-ku, Nagoya, Japan Nagoya University, Chikusa-ku, Nagoya, Japan 1217 University of Pittsburgh, Pittsburgh, PA, US University of Pittsburgh, Pittsburgh, PA, US 1218 Institut fuer Astronomie, Zurich, Switzerland Institut fuer Astronomie, Zurich, Switzerland 1219 NASA, Goddard Space Flight Center, Infrared and Radio Astronomy Branch, Greenbelt, MD NASA, Goddard Space Flight Center, Infrared and Radio Astronomy Branch, Greenbelt, MD 1220 NASA, Goddard Space Flight Center, Cosmic Radiations Branch, Greenbelt, Md. NASA, Goddard Space Flight Center, Cosmic Radiations Branch, Greenbelt, Md. 1221 Rossiiskaia Akademiia Nauk, Institut Prikladnoi Matematiki, Moscow, Russia Rossiiskaia Akademiia Nauk, Institut Prikladnoi Matematiki, Moscow, Russia 1222 Gesellschaft fuer Schwerionenforschung mbH, Darmstadt, West Germany Gesellschaft fuer Schwerionenforschung mbH, Darmstadt, West Germany Gesellschaft fur Schwerionenforschung mbH, Darmstadt, West Germany 1223 RIKEN, the Institute of Physical and Chemical Research, Saitama, Japan RIKEN, the Institute of Physical and Chemical Research, Saitama, Japan 1224 CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires CONICET, Instituto de Astronomia y Fisica del Espacio, Buenos Aires 1225 NASA, Ames Research Center, Theoretical Studies Branch, Moffett Field, CA NASA, Ames Research Center, Theoretical Studies Branch, Moffett Field, CA 1226 NASA, Ames Research Center, Astrophysical Experiments Branch, Moffett Field NASA, Ames Research Center, Astrophysical Experiments Branch, Moffett Field NASA, Ames Research Center, Astrophysical Experiments Branch, Moffett Field, CA 1227 CNRS, Institut d'Astrophysique Spatiale, Verrieres-le-Buisson, France CNRS, Institut d'Astrophysique Spatiale, Verrieres-le-Buisson, France 1228 Iowa State University of Science and Technology, Ames Iowa State University of Science and Technology, Ames Iowa State University of Science and Technology, Ames, IA 1229 Bureau des Longitudes, Service de Mecanique Ceeste, Paris, France Bureau des Longitudes, Service de Mecanique Celeste, Paris, France Bureau des Longitudes, Service de Mechanique Celeste, Paris, France Bureau des Longitudes, Service de Mecanique Ceeste, Paris, France 1230 Grenoble I, Universite, Saint-Martin-d'Heres, Isere, France Grenoble I, Universite, Saint-Martin-d'Heres, Isere, France Grenoble, Universite, Saint-Martin-d'Heres, Isere, France Grenoble I, Universite, Saint-Martin-d'Heres, Isee, France 1231 Hannover, Technische Universitaet, Hanover, West Germany Hannover, Technische Universitaet, Hanover, West Germany 1232 University of Western Ontario, London, Ontario, Canada University of Western Ontario, London, Ontario, Canada 1233 Bordeaux, Universite, Observatoire, Floirac, Gironde, France Bordeaux, Universite, Observatoire, Floirac, Gironde, France Bordeaux I, Universite, Observatoire, Floirac, Gironde, France 1234 Mount John University Observatory, Christchurch, New Zealand Mount John University Observatory, Christchurch, New Zealand 1235 Osservatorio Astronomico, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy Osservatorio Astronomico, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy Osservatorio Astronomico, Via dell'Osservatorio 5, I-35122 Padova, Italy Osservatorio Astronomico, Vicolo dell'Osservatorio 5, I- 35122 Padova, Italy 1236 Osservatorio Astronomico di Torino, I-10025, Pino Torinese, Italy Osservatorio Astronomico di Torino, I-10025, Pino Torinese, Italy Osservatorio Astronomico di Torino, I-10025 Pino Torinese, Italy 1237 Osservatorio Astronomico, via GB Tiepolo 11, I-34131 Trieste, Italy Osservatorio Astronomico, via GB Tiepolo 11, I-34131 Trieste, Italy Osservatorio Astronomico, Via G.B. Tiepolo, 11, I-34131 Trieste, Italy 1238 Istituto di Radioastronomia, CNR, via Gobetti 101, I-40129 Bologna, Italy Istituto di Radioastronomia, CNR, via Gobetti 101, I-40129 Bologna, Italy 1239 CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Extraterrestri CNR, Laboratorio di Tecnologie e Studio delle Radiazioni Estraterrestri 1240 Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina 1241 Copenhagen, University, Observatory, Copenhagen, Denmark Copenhagen, University, Observatory, Copenhagen, Denmark 1242 Hatfield Polytechnic, Observatory, Hertford, Herts., England Hatfield Polytechnic Observatory, Hertford, Herts., England Hatfield Polytechnic, Observatory, Hertford, Herts., England Hatfield Polytechnic, Observatory, Hatfield, Herts., England Hatfield Polytechnic Observatory, Hatfield, Herts., England 1243 Astrophysics, Nuclear Physics Laboratory, Oxford, UK Astrophysics, Nuclear Physics Laboratory, Oxford, UK 1244 Melbourne, University, Parkville, Victoria, Australia Melbourne, University, Parkville, Victoria, Australia 1245 Department d'Astronomia i Meteorologia, Barcelona, Spain Department d'Astronomia i Meteorologia, Barcelona, Spain Departament d'Astronomia i Meteorologia, Barcelona, Spain 1246 Darmstadt, Technische Hochschule, Darmstadt, West Germany Darmstadt, Technische Hochschule, Darmstadt, West Germany 1247 Catholic University of America, Washington, DC, US Catholic University of America, Washington, DC, US 1248 Chalmers University of Technology, Goteborg, Sweden Chalmers University of Technology, Goteborg, Sweden 1249 The Queens University of Belfast, Belfast, Ireland, UK The Queens University of Belfast, Belfast, Ireland, UK 1250 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, UK Royal Greenwich Observatory, Madingley Road, Cambridge CB9 0EZ, UK 1251 Krakow, Uniwersytet, Obserwatorium Astronomiczne, Poland Krakow, Uniwersytet, Obserwatorium Astronomiczne, Poland 1252 Akademiia Nauk Armianskoi SSR, Fizicheskii Institut, Yerevan, Armenian SSR Akademiia Nauk Armianskoi SSR, Fizicheskii Institut, Yerevan, Armenian SSR 1253 Shemakhinskaia Astrofizicheskaia Observatoriia, Shemakha, Azerbaidzhan SSR Shemakhinskaia Astrofizicheskaia Observatoriia, Shemakha, Azerbaidzhan SSR 1254 Abastumanskaia Astrofizicheskaia Observatoriia, Abastumani, Georgian SSR Abastumanskaia Astrofizicheskaia Observatoriia, Abastumani, Georgian SSR 1255 Biurakanskaia Astrofizicheskaia Observatoriia, Yerevan, Armenian SSR Biurakanskaia Astrofizicheskaia Observatoriia, Yerevan, Armenian SSR Biurakanskaia Astrofizicheskaia Observatoriia, Byurakan, Armenian SSR 1256 California Association for Research in Astronomy, Kamuela, HI, US California Association for Research in Astronomy, Kamuela, HI, US 1257 Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian SSR Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian SSR Krymskaia Astrofizicheskaia Observatoriia, Nauchny, Ukrainian, SSR Krymskaia Astrofizicheskai Observatoriia, Nauchny, Ukrainian SSR 1258 Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhyz, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Nizhnii Arkhyz, USSR Spetsial'naia Astrofizicheskaia Observatoriia, Nizhni Arkhys, USSR 1259 Tartuskaia Astrofizicheskaia Observatoriia, Toravere, Estonian SSR Tartuskaia Astrofizicheskaia Observatoriia, Toravere, Estonian SSR 1260 Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago 1261 National Institute of Standards and Technology, Boulder, CO, US National Institute of Standards and Technology, Boulder, CO, US 1262 Potchefstroom Univ. for Christian Higher Education, South Africa Potchefstroom Univ. for Christian Higher Education, South Africa 1263 National Optical Astronomical Observatories, Tucson, AZ, US National Optical Astronomical Observatories, Tucson, AZ, US 1264 Glavnaia Astronomicheskaia Observatoriia, Goloseevo, Ukrainian SSR Glavnaia Astronomicheskaia Observatoriia, Goloseevo, Ukrainian SSR 1265 National Astronomical Observatory, Smoljan, Bulgaria National Astronomical Observatory, Smoljan, Bulgaria National Astronomical Observatory, Smolyan, Bulgaria 1266 Copenhagen, University, Observatory, Tollose, Denmark Copenhagen, University, Observatory, Tollose, Denmark 1267 Shaanxi Astronomical Observatory, Lintong, People's Republic of China Shaanxi Astronomical Observatory, Lintong, People's Republic of China 1268 University of Science and Technology of China, Hefei, People's Republic of China University of Science and Technology of China, Hefei, People's Republic of China 1269 Astronomical Observatory, Purple Mountain, People's Republic of China Astronomical Observatory, Purple Mountain, People's Republic of China 1270 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild Strasse 1, D-85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild- Strasse 1, 85748 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, D-85748 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, D-85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild- Strasse 1, 85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild Strasse 1, D-85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, 85748 Garching, Germany 1271 ST-ECF/ESO, Karl-Schwarzschild-Strasse 2, D-85740 Garching bei Munchen, Germany ST-ECF/ESO, Karl-Schwarzschild-Strasse 2, D-85740 Garching bei Munchen, Germany 1272 Max-Planck-Institut fur extraterrestrische Physik, 85740 Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, D-85740 Garching bein Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, D-85740 Garching bei Munchen, Germany Max-Planck Institut fur extraterrestrische Physik, D85740 Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, 85740 Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, D-85740, Garching bei Munchen, Germany Max-Planck-Institut fur extraterrestrische Physik, 85740 Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, D-85478, Garching bei Munchen, Germany 1273 Max-Planck-Institut fuer Physik und Astrophysik, Garching, West Germany Max-Planck-Institut fur Physik und Astrophysik, Garching, West Germany Max-Planck-Institut fur Physik and Astrophysik, Garching, West Germany Max-Planck-Institut fuer Physik und Astrophysik Garching, West Germany Max-Planck-Institut fuer Physik und Astrophysik, Garching, West Germany Max-Planck-Institute fuer Physik und Astrophysik, Garching, West Germany Max-Planck Institut fuer Physik und Astrophysik, Garching, West Germany 1274 European Southern Observatory, Karl Schwarzschild Strasse 2, D- 85748 Garching, Germany European Southern Observatory, K. Schwarzschild Str. 2, D-85748 Garching, Germany European Southern Observatory, Karl Schwarzschild Strasse 2, D- 85748 Garching, Germany European Southern Observatory, Karl Schwarzschild Strasse 2, D-85748 Garching, Germany European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany 1275 Max-Planck-Institut fur extraterrestrische Physik, Postfach 1063, D85740 Garching, Germany Max-Planck-Institut fur extraterrestrische Physik, Postfach 1603, D-85740, Garching, Germany Max-Planck-Institut fur extraterrestrische Physik, Postfach 1063, D85740 Garching, Germany Max-Planck-Institut fur Extraterrestrische Physik, Postfach 1603, D85740 Garching, Germany 1276 Max-Planck-Institute fur Astrophysik, 85740 Garching, Germany Max-Planck Institut fur Astrophysik, D-85740 Garching, Germany Max-Planck-Institut fur Astrophysik, D-85740 Garching, Germany Max-Planck-Institute fur Astrophysik, 85740 Garching, Germany Max-Planck-Institut fur Astrophysik, 85740 Garching, Germany Max-Planck-Institut fur Astrophysik, D-85740, Garching, Germany 1277 Max-Planck-Institut fur Astrophysik, Postfach 1523,D-85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Postfach 1523,D-85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Postfach 1523, D-85740 Garching, Germany Max-Planck-Institut fur Astrophysik, Postfach 1523, 85740 Garching, Germany 1278 Gosudarstvennyj Astronomicheskij Inst., Moscow, Russia Gosudarstvennyj Astronomicheskij Inst., Moscow, Russia Gosudarstvennyi Astronomicheskii Inst., Moscow, Russia Gosudarstvennyj Astronomicheskij Institut, Moscow, Russia 1279 Institute for Space Observations, Charleston, SC Institute for Space Observations, Charleston, SC 1280 Universities Space Research Association, Columbia, MD, US Universities Space Research Association, Columbia, MD, US 1281 Mt. Stromlo Observatory, Canberra, Australia Mt. Stromlo Observatory, Canberra, Australia 1282 Flower and Cook Observatory, Philadelphia, PA Flower and Cook Observatory, Philadelphia, PA 1283 Yerkes Observatory, Williams Bay, WI, US Yerkes Observatory, Williams Bay, WI, US 1284 Rosemary Hill Observatory, Gainesville, Fla. Rosemary Hill Observatory, Gainesville, Fla. 1285 High Altitude Observatory, Boulder, CO, US High Altitude Observatory, Boulder, CO, US 1286 Las Campanas Observatory, La Serena, Chile Las Campanas Observatory, La Serena, Chile 1287 Vainu Bappu Observatory, Alangayam, India Vainu Bappu Observatory, Alangayam, India 1288 Astronomicheskaia Observatoriia, Odessa, Ukrainian, SSR Astronomicheskaia Observatoriia, Odessa, Ukrainian, SSR 1289 National Central Univ., Chung-Li, Taiwan National Central Univ., Chung-Li, Taiwan 1290 Georgia State Univ., Atlanta, Georgia, US Georgia State Univ., Atlanta, Georgia, US 1291 Wyoming Infrared Observatory, Laramie, WY Wyoming Infrared Observatory, Laramie, WY Wyoming Infrared Observatory, Laramie, Wyo. 1292 Arizona State University, Temple, Arizona, US Arizona State University, Temple, Arizona, US 1293 Strawbridge Observatory, Haverford, PA Strawbridge Observatory, Haverford, PA 1294 Glasgow Univ. Observatory, United Kingdom Glasgow Univ. Observatory, United Kingdom 1295 Ege Univ. Observatory, Bornova, Turkey Ege Univ. Observatory, Bornova, Turkey 1296 Universidad Nacional de La Plata, La Plata, Argentina Universidad Nacional de La Plata, La Plata, Argentina 1297 Virginia Polytechic Institute and State University, Blacksburg, VA Virginia Polytechic Institute and State University, Blacksburg, VA Virginia Polytechnic Institute and State Univesity, Blacksburg, VA Virginia Polytechnic Institute and State University, Blacksburg, Va. Virginia Polytechnic Institute and State University, Blacksburg 1298 Korea Advanced Inst. of Science and Technology, Taejeon, Korea Korea Advanced Inst. of Science and Technology, Taejeon, Korea 1299 International School for Advanced Studies, Miramare-Trieste, Italy International School for Advanced Studies, Miramare-Trieste, Italy 1300 CNR, Istituto di Ricerca sulle Onde Elettromagnetiche, Florence, Italy CNR, Istituto di Ricerca sulle Onde Elettromagnetiche, Florence, Italy CNR, Istituto di Ricerca sulle Onde Ellettromagnetiche, Florence, Italy 1301 Universitat Erlangen-Nuernberg, Bamberg, Germany Universitat Erlangen-Nuernberg, Bamberg, Germany Universitat Erlangen-Nuernberg, Bamburg, Germany 1302 Armagh Observatory, Armagh, Northern Ireland Armagh Observatory, Armagh, Northern Ireland, UK Armagh Observatory, Armagh, Northern Ireland 1303 MIT Haystack Observatory, Westford, MA, US MIT Haystack Observatory, Westford, MA, US 1304 Hickox Observatory, Chagrin Falls, Ohio Hickox Observatory, Chagrin Falls, Ohio 1305 Braeside Observatory, Flagstaff, AZ, US Braeside Observatory, Flagstaff, AZ, US 1306 Vassar College Observatory, Poughkeepsie, NY, US Vassar College Observatory, Poughkeepsie, NY, US Vassar College Observatory, Poughkeepsie, NY 1307 Millimeter Wave Observatory, Fort Davis, Tex. Millimeter Wave Observatory, Fort Davis, Tex. Millimeter Wave Observatory, Fort Davis, Tex. 1308 Stockholm Observatory, Saltsjobaden, Sweden Stockholm Observatory, Saltsjobaden, Sweden Stockholm Observatory, Saltsjoebaden, Sweden 1309 Vainu Bappu Observatory, Kavalur, India Vainu Bappu Observatory, Kavalur, India 1310 University of Hong Kong, Hong Kong University of Hong Kong, Hong Kong 1311 Copenhagen, University Observatory, Tollose, Denmark Copenhagen, University Observatory, Tollose, Denmark 1312 Felix Aguilar Observatory, San Juan, Argentina Felix Aguilar Observatory, San Juan, Argentina 1313 MPI fuer Astrophysik, Muenchen, Germany MPI fuer Astrophysik, Muenchen, Germany 1314 Helsinki Univ. of Technology, Espoo, Finland Helsinki Univ. of Technology, Espoo, Finland 1315 Landis Observatory, Locust Grove, GA Landis Observatory, Locust Grove, GA 1316 Warner and Swasey Observatory, Cleveland, OH Warner and Swasey Observatory, Cleveland, OH 1317 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany Astrophysikalisches Institut Postsdam, An der Sternwarte 16, D-14482, Potsdam, Germany Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D- 14482 Potsdam, Germany Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany Astrophysikalisches Institut Postsdam, An der Sternwarte 16, D-14482, Potsdam, Germany Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D- 14482 Potsdam, Germany 1318 Astrophysical Institute of Potsdam, An der Sternwarte 16, Potsdam, D-14482 Germany Astrophysical Institute of Potsdam, An der Sternwarte 16, Potsdam, D-14482 Germany 1319 Astrophysikalisches Inst., Potsdam, Germany Astrophysikalisches Inst., Potsdam, Germany 1320 National Inst. for Fusion Science, Nagoya, Japan National Inst. for Fusion Science, Nagoya, Japan 1321 Raman Research Institute, Sadashivanagar, Bangalore 560080, India Raman Research Institute, Sadashivanagar, Bangalore 560080, India 1322 SRON, Laboratorium voor Ruimteonderzoek, Groningen, Netherlands SRON, Laboratorium voor Ruimteonderzoek, Groningen, Netherlands 1323 Inst. de Astronomia y Fisica del Espacio, Buenos Aires Inst. de Astronomia y Fisica del Espacio, Buenos Aires Instituto de Astronomia y Fisica del Espacio, Buenos Aires 1324 Sonnenobservatorium Einsteinturm, Potsdam, Germany Sonnenobservatorium Einsteinturm, Potsdam, Germany 1325 Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, US Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, US Jet Propulsion Lab., California Inst. of Technology, Pasadena, CA, US 1326 CNRS, Service d'Aeronomie, Verrieres-le-Buisson, Essonne, France CNRS, Service d'Aeronomie, Verrieres-le-Buisson, Essonne, France 1327 Fermi National Accelerator Laboratory, Batavia, IL Fermi National Accelerator Laboratory, Batavia, IL NASA/Fermi National Accelerator Laboratory, Batavia, IL 1328 San Fernando Observatory, Northridge, CA San Fernando Observatory, Northridge, CA 1329 Asiago, Osservatorio Astrofisico, Asiago, Italy Asiago, Osservatorio Astrofisico, Asiago, Italy 1330 Uzbek Academy of Sciences, Astronomical Inst., Tashkent, Uzbekistan Uzbek Academy of Sciences, Astronomical Inst., Tashkent, Uzbekistan 1331 U.S. Navy, Center for Advanced Space Sensing, Washington, DC U.S. Navy, Center for Advanced Space Sensing, Washington, DC U.S. Navy, Center for Advanced Space Sensing, Washington 1332 Grenoble I, Universite, Saint-Martin-d'Heres, France Grenoble I, Universite, Saint-Martin-d'Heres, France 1333 New Jersey Inst. of Technology, Newark New Jersey Inst. of Technology, Newark 1334 Westerbork, Radiosterrenwacht, Zwiggelte, Netherlands Westerbork, Radiosterrenwacht, Zwiggelte, Netherlands 1335 Yonsei University, Seoul, Republic of Korea Yonsei University, Seoul, Republic of Korea 1336 Franche-Comte, Universite, Besancon, France Franche-Comte, Universite, Besancon, France 1337 Department of Physics, Queen's University, Kingston, Canada Department of Physics, Queen's University, Kingston, Canada 1338 Instituto Nacional de Tecnica Aerospacial, Madrid, Spain Instituto Nacional de Tecnica Aerospacial, Madrid, Spain 1339 Insituto de Fisica, Porto Alegre, Brazil Insituto de Fisica, Porto Alegre, Brazil 1340 Unviersity of British Columbia, Vancouver, BC, Canada University of British Columbia, Vancouver, BC, Canada Unviersity of British Columbia, Vancouver, BC, Canada 1341 Instituto de Astronomia, Mexico, D.F., Mexico Instituto de Astronomia, Mexico, D.F., Mexico 1342 Institute for Space and Terrestrial Science, Concord, Canada Institute for Space and Terrestrial Science, Concord, Canada 1343 Centro Astronomico Hispano-Aleman, Almeria, Spain Centro Astronomico Hispano-Aleman, Almeria, Spain 1344 Muenchen, Technische Universitaet, Munich Muenchen, Technische Universitaet, Munich 1345 Arya Mehr University of Technology, Teheran, Iran Arya Mehr University of Technology, Teheran, Iran 1346 Instituto de Astronomia, Buenos Aires, Argentina Instituto de Astronomia, Buenos Aires, Argentina 1347 Instituto Nacional de Tecnica Aeroespacial, Torrejon de Ardoz, Spain Instituto Nacional de Tecnica Aeroespacial, Torrejon de Ardoz, Spain Instituto Nacional de Tecnica Aerospacial, Torrejon de Ardoz, Spain 1348 NASA. USRA, STX Corp., Greenbelt, MD, US NASA. USRA, STX Corp., Greenbelt, MD, US 1349 Amsterdam, University, Amsterdam, Netherlands Amsterdam, University, Amsterdam, Netherlands 1350 Sheffield Univ., United Kingdom Sheffield Univ., United Kingdom 1351 Phillips Laboratory, Hanscom AFB, MA, US Phillips Laboratory, Hanscom AFB, MA, US Phillips Laboratory, Hanscomb AFB, MA, US 1352 NRAO, PO Box 0, Socorro, NM 87801, USA NRAO, PO Box 0, Socorro, NM 87801, USA 1353 University of Oxford, Oxford, UK University of Oxford, Oxford, UK University of Oxford, Oxford, UK 1354 Melbourne, University, Melbourne, Australia Melbourne, University, Melbourne, Australia 1355 Potsdam, Astrophysikalisches Inst., Germany Potsdam, Astrophysikalisches Inst., Germany 1356 University of Iceland, Reykjavik, Iceland University of Iceland, Reykjavik, Iceland 1357 Vassar College, Poughkeepsie, NY, US Vassar College, Poughkeepsie, NY, US 1358 Scarborough College, West Hill Scarborough College, West Hill 1359 University of Vienna, Vienna, Austria University of Vienna, Vienna, Austria 1360 New Alipore College, Calcutta, India New Alipore College, Calcutta, India 1361 National Air and Space Museum, Washington National Air and Space Museum, Washington 1362 Rosemary Hill Observatory, Gainesville, FL Rosemary Hill Observatory, Gainesville, FL 1363 Bureau de Longitudes, Paris, France Bureau de Longitudes, Paris, France Bureau des Longitudes, Paris, France Bureau de Longitudes, Paris, France Bureau des Longitudes, Paris, France 1364 Universidade Estadual Paulista, Sao Paulo, Brazil Universidade Estadual Paulista, Sao Paulo, Brazil Universidade Estadual Paulista, Sao Paolo, Brazil 1365 University of California at Berkeley, Berkeley, CA, US University of California at Berkeley, Berkeley, CA, US 1366 NASA. Jet Propulsion Lab., Pasadena, CA, US NASA. Jet Propulsion Lab., Pasadena, CA, US 1367 Institut d'Astrophysique Spatiale, CNRS, Bat. 121 Institut d'Astrophysique Spatiale, CNRS, Bat. 121 1368 Franklin and Marshall College, Lancaster, PA, US Franklin and Marshall College, Lancaster, PA, US Franklin and Marshall College, Lancaster, PA 1369 Laboratoire de Physique des Solides, Toulouse, France Laboratoire de Physique des Solides, Toulouse, France 1370 St. Patrick's College, Maynooth, Republic of Ireland St. Patrick's College, Maynooth, Republic of Ireland Saint Patrick's College, Maynooth, Republic of Ireland 1371 University of Arizona Steward Observatory, Tucson, AZ, US University of Arizona Steward Observatory, Tucson, AZ, US 1372 Polish Academy of Sciences, Astronomical Centre, Warsaw, Poland Polish Academy of Sciences, Astronomical Centre, Warsaw, Poland Polish Academy of Sciences, Astronomical Center, Warsaw, Poland Polish Academy of Sciences, Astronomical Center, Torun, Poland Polish Academy of Sciences, Astronomical Centre, Torun, Poland 1373 NASA, Ames Research Center, Space Science Div., Moffett Field, Calif. NASA, Ames Research Center, Space Science Div., Moffett Field, Calif. NASA, Ames Research Center, Space Sciences Div., Moffett Field, Calif. 1374 Universitat de les Illes Balears, Palma de Mallorca, Spain Universitat de les Illes Balears, Palma de Mallorca, Spain 1375 Jet Propulsion Lab., Cal. Inst. of Tech., Pasadena, CA, US Jet Propulsion Lab., Cal. Inst. of Tech., Pasadena, CA, US Jet Propusion Lab., Cal. Inst. of Tech., Pasadena, CA, US 1376 The Observatories, Carnegie Institution of Washington, Pasadena, CA, US The Observatories, Carnegie Institution of Washington, Pasadena, CA, US 1377 A.F. Ioffe Institute for Physics and Technology, St. Petersburg, Russia A.F. Ioffe Institute for Physics and Technology, St. Petersburg, Russia 1378 National Bureau of Standards, Laboratory Astrophysics Div., Boulder, Colo. National Bureau of Standards, Laboratory Astrophysics Div., Boulder, Colo. 1379 National Bureau of Standards, Quantum Physics, Div., Boulder, CO National Bureau of Standards, Quantum Physics Div., Boulder, CO National Bureau of Standards, Quantum Physics Dept., Boulder, CO National Bureau of Standards, Quantum Physics Div., Boulder, Colo. National Bureau of Standards, Quantum Physics, Div., Boulder, CO 1380 Commissariat a l'Energie Atomique, Service d'Electronique Physique, Gif-sur-Yvette, Essonne Commissariat a l'Energie Atomique, Service d'Electronique Physique, Gif-sur-Yvette, Essonne 1381 NASA, Ames Research Center, Extraterrestrial Research Div., Moffett Field, Calif. NASA, Ames Research Center, Extraterrestrial Research Div., Moffett Field, Calif. NASA, Ames Research Center, Extraterrestrial Research Div., Moffett Field, CA 1382 Instituto Argentino de Radioastronomia, Villa Elisa, Buenos Aires, Argentina Instituto Argentino de Radioastronomia, Villa Elisa, Buenos Aires, Argentina 1383 CONYCET, Instituto Argentino de Radioastronomia, Villa Elisa, Argentina CONICET, Instituto Argentino de Radioastromia, Villa Elisa, Argentina CONYCET, Instituto Argentino de Radioastronomia, Villa Elisa, Argentina CONICET, Instituto Argentino de Radioastronomia, Villa Elisa, Angentina CONICET, Instituto Argentino de Radioastronomia, Vila Elisa, Argentina 1384 Lockheed Solar and Astrophysics Laboratory, Palo Alto, CA, US Lockheed Solar and Astrophysics Laboratory, Palo Alto, CA, US 1385 Kernforschungszentrum Karlsruhe GmbH, Institut fuer Kernphysik III, Karlsruhe, West Germany Kernforschungszentrum Karlsruhe GmbH, Institut fuer Kernphysik III, Karlsruhe, West Germany Kernforschungszentrum Karlsruhe GmbH, Institut fuer Kernphyik III, Karlsruhe, West Germany 1386 South African Astronomical Observatory Summer Student South African Astronomical Observatory Summer Student 1387 Jet Propulsion Laboratory, California Inst. of Tech., Pasadena, CA, US Jet Propulsion Laboratory, California Inst. of Tech., Pasadena, CA, US Jet Propulsion Laboratory, California Inst. of Tech, Pasadena, CA, US 1388 Department of Physics, University of California, Santa Barbara, CA 93106, USA Department of Physics, University of California, Santa Barbara, CA 93106, USA 1389 Department of Chemistry, University of Georgia, Athens, GA 30602, USA Department of Chemistry, University of Georgia, Athens, GA 30602, USA 1390 Department of Physics, University of Patras, Patras 26500, Greece Department of Physics, University of Patras, Patras 26500, Greece 1391 Department of Physics, University of Leicester, Leicester LE1 7RH, UK Department of Physics, University of Leicester, Leicester LE1 7RH, UK 1392 Department of Physics, University of Leeds, Leeds LS2 9JT, UK Department of Physics, University of Leeds, Leeds LS2 9JT, UK 1393 Department of Physics, University of Sheffield, Sheffield S3 7RH, UK Department of Physics, University of Sheffield, Sheffield S3 7RH, UK Department of Physics, University of Sheffield, Sheffield S3 7RH Department of Physics, University of Sheffield, Sheffield S3, UK 1394 Astronomy Centre, Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, UK Astronomy Centre, Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, UK 1395 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore MD 21218, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, Maryland 21218, USA Space Telescope Science Institute, 3700 San Martin Road, Baltimore, MD 21218, USA Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, U.S.A. 1396 Anglo-Australian Observatory, Epping Laboratory, PO Box 296, Epping, NSW 2121, Australia Anglo-Australian Observatory, Epping Laboratory, PO Box 296, Epping, NSW, 2121, Australia Anglo-Australian Observatory, Epping Laboratory, PO Box 296, Epping, NSW 2121, Australia Anglo-Australian Observatory, Epping Laboratory, PO Box 296, Epping NSW 2121, Australia 1397 University of South Africa, Pretoria, Republic of South Africa University of South Africa, Pretoria, Republic of South Africa 1398 Edinburgh, Royal Observatory, Coonabarabran, New South Wales, Australia Edinburgh, Royal Observatory, Coonabarabran, New South Wales, Australia Edinburgh Royal Observatory, Coonbarabran, New South Wales, Australia 1399 The Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ The Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ Royal Greenwich Observatory, Madingley Rd, Cambridge CB3 0EZ Royal Greenwich Observatory, Madingley Road, Cambridge CB30EZ 1400 CNR, Istituto di Fisica Cosmica ed Applicazioni dell'Informatica, Palermo, Italy CNR, Istituto di Fisica Cosmica ed Applicazioni dell'Informatica, Palermo, Italy CNR, Istituto di Fisica Cosmica e Applicazioni dell'Informatica, Palermo, Italy CNR, Istituto di Fisica Cosmica ed Applicazioni all'Informatica, Palermo, Italy CNR, Istituto di Fisica Cosmica e Applicazioni dell' Informatica, Palermo, Italy 1401 CNRS, Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Orsay, Essonne, France CNRS, Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, Orsay, Essonne, France 1402 Haute-Provence, Observatoire, Saint-Michel-l'Observatoire, Alpes-de-Haute-Provence, France Haute-Provence, Observatoire, Saint-Michel-l'Observatoire, Alpes-de-Hautes-Provence, France Haute-Provence, Observatoire, Saint-Michel-l'Observatoire, Alpes-de-Haute-Provence, France Haute-Provence, Observatoire, Saint-Michel l'Observatoire, Alpes-de-Haut-Provence, France Haute-Provence, Observatoire, Saint-Michel-L'Observatoire, Alpes-de-Haute-Provence, France Haute-Provence, Observatoire, Saint Michel-l'Observatoire, Alpes-de-Haute-Provence, France Haute-Provence Observatoire, Saint-Michel-l'Observatoire, Alpes-de-Haute-Provence, France Haute-Provence, Observatoire, Saint-Michel l'Observatoire, Alpes-de-Haute-Provence, France Haute Provence, Observatoire, Saint-Michel-l'Observatoire, Alpes-de-Haute-Provence, France Haute-Provence, Observatoire Saint-Michel-l'Observatoire, Alpes-de-Haute-Provence, France Haute-Provence Observatoire, Saint-Michel l'Observatoire, Alpes-de-Haute-Provence, France Haute Province, Observatoire, Saint-Michel-l'Observatoire, Alpes-de-Haute-Province, France 1403 Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK 1404 Institute of Space and Astronautical Science 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229, Japan Institute of Space and Astronautical Science, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229, Japan Institute of Space and Astronautical Science, Yoshino-dai, Sagamihara, Kanagawa 229, Japan Institute of Space and Astronautical Science, Yoshinodai, Sagamihara, Kanagawa 229, Japan Institute of Space and Astronautical Science, 3-1-1,Yoshinda, Sagamihara-shi, Kanagawa 229, Japan Institute of Space and Astronautical Science 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229, Japan 1405 Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, USA Department of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, USA 1406 Department of Physics and Astronomy, Johns Hopkins University, Baltimore MD 21218, USA Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218, USA Department of Physics and Astronomy, The John Hopkins University, Baltimore, MD 21218, USA Department of Physics and Astronomy, Johns Hopkins University, Baltimore MD 21218, USA 1407 Mt Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia Mt Stromlo and Siding Spring Observatories, Australian National University, Weston, ACT 2611, Australia 1408 Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK Mullard Space Science Laboratory, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK 1409 Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH, UK Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH, UK Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH 1410 Slovenska Akademia Vied, Astronomicky Ustav, Tatranska Lomnica, Czechoslovakia Slovenska Akademia Vied, Astronomicky Ustav, Tatranska Lomnica, Czechoslovakia Slovenska Akademiia Vied, Astronomicky Ustav, Tatranska Lomnica, Czechoslovakia 1411 Czechoslovak Academy of Sciences, Astronomical Institute, Ondrejov, Czechoslovakia Czechoslovak Academy of Sciences, Astronomical Inst., Ondrejov, Czechoslovakia Czechoslovak Academy of Sciences, Astronomical Institute, Ondrejov, Czechoslovakia 1412 Department of Astronomy, University of Manchester, Schuster Laboratory, Oxford Road, Manchester M13 9PL, Department of Astronomy, University of Manchester, Schuster Laboratory, Oxford Road, Manchester M13 9PL, 1413 Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK 1414 Department of Physics and Astronomy, Arizona State University, Box 871504, Tempe, AZ 85287-1504, USA Department of Physics and Astronomy, Arizona State University, Box 871504, Tempe, AZ 85287-1504, USA 1415 Institute of Physical and Chemical Research, Hirosawa, Wako, Saitama 351-01, Japan Institute of Physical and Chemical Research, Hirosawa, Wako, Saitama 351-01, Japan 1416 Astronomy Group, Department of Physics, Queen's University at Kingston, Ontario, UK Astronomy Group, Department of Physics, Queen's University at Kingston, Ontario, UK 1417 International School for Advanced Studies (SISSA), Via Beirut 2-4, 34013 Trieste, Italy International School for Advanced Studies (SISSA), Via Beirut 2-4, 34013 Trieste, Italy International School for Advanced Studies, SISSA via Beirut 2-4, 34013 Trieste, Italy International School for Advanced Studies, SISSA, via Beirut 2-4, I-34013 Trieste, Italy 1418 Australia Telescope National Facility, Epping, New S. Wales, Australia Australia Telescope National Facility, Epping, New S. Wales, Australia 1419 Australian Telescope National Facility, PO Box 76, Epping, New South Wales 2121, Australia Australian Telescope National Facility, PO Box 76, Epping, New South Wales 2121, Australia Australia Telescope National Facility, PO Box 76, Epping, New South Wales 2121, Australia 1420 Atomic Energy Research Establishment, Nuclear Physics Div., Harwell, Berks., England Atomic Energy Research Establishment, Nuclear Physics Div., Harwell, Berks., England Atomic Energy Research Establishment, Nuclear Physics Div., Harwell, Oxon, England 1421 Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon, England Science and Engineering Research Council, Rutherford Appleton Laboratory, Didcot, Oxon, England 1422 NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, Calif. NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, Calif. NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, CA NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffett Field, Calif NASA, Ames Research Center, Theoretical and Planetary Studies Branch, Moffet Field, Calif. 1423 Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, Republic of South Africa Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, Republic of South Africa 1424 European Southern Observatory, Karl-Schwarzschild Str., D-85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild Str., D-85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Strabetae 2, D-85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Strasse 2, D- 85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-strasse 2, D-85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748, Garching bei Munchen, Germany 1425 National Research Council of Canada, Div. of Physics, Ottawa National Research Council of Canada, Div. of Physics, Ottawa 1426 National Research Council, Victoria, BC, Canada National Research Council, Victoria, BC, Canada 1427 Univ. of Manchester, Macclesfield, Cheshire, UK Univ. of Manchester, Macclesfield, Cheshire, UK The Univ. of Manchester, Macclesfield, Cheshire, UK 1428 Academy of Sciences, Bohemia, Czech Republic Academy of Sciences, Bohemia, Czech Republic 1429 Univ. J. Fourier, Grenoble Cedex, France Univ. J. Fourier, Grenoble Cedex, France 1430 Univ. Louis Pasteur, Strasbourg, France Univ. Louis Pasteur, Strasbourg, France 1431 Universitat Basel, Binningen, Switzerland Universitat Basel, Binningen, Switzerland 1432 Univ. Autonoma de Madrid, Madrid, Spain Univ. Autonoma de Madrid, Madrid, Spain 1433 University of Helsinki, Finland University of Helsinki, Finland 1434 Onsala Rymdobservatorium, Sweden Onsala Rymdobservatorium, Sweden 1435 University of Alabama, Tuscaloosa, AL, US University of Alabama, Tuscaloosa, AL, US 1436 Owens Valley Radio Observatory Owens Valley Radio Observatory 1437 Tennessee State Univ., Nashville Tennessee State Univ., Nashville 1438 Brockport State College, Brockport, NY Brockport State College, Brockport, NY 1439 Univ. of Florida, Gainesville, FL, US Univ. of Florida, Gainesville, FL, US 1440 Universidad de los Andes, Merida, Venezuela Universidad de los Andes, Merida, Venezuela 1441 Univ. College, Campbell, Australia Univ. College, Campbell, Australia 1442 Pedagogical Univ., Zielona Gora, Poland Pedagogical Univ., Zielona Gora, Poland 1443 Lorand Eotvos Univ., Budapest, Hungary Lorand Eotvos Univ., Budapest, Hungary 1444 Univ. of Minnesota, Minneapolis, MN, US Univ. of Minnesota, Minneapolis, MN, US 1445 Instituto de Astronomia, D.F., Mexico Instituto de Astronomia, D.F., Mexico 1446 Ist. Nazionale di Fisica Nucleare Ist. Nazionale di Fisica Nucleare 1447 Institut za Fiziku, Belgrade, Yugoslavia Institut za Fiziku, Belgrade, Yugoslavia 1448 Queen's Univ. of Belfast, Belfast, N. Ireland, UK Queen's Univ. of Belfast, Belfast, N. Ireland, UK 1449 Arecibo Observatory, Arecibo, PR Arecibo Observatory, Arecibo, PR 1450 Vermilion River Observatory, Urbana, Ill. Vermilion River Observatory, Urbana, Ill. 1451 Sternberg State Astronomical Institute, Moscow, Russia Sternberg State Astronomical Institute, Moscow, Russia 1452 Southwest Research Institute, San Antonio, TX, US Southwest Research Institute, San Antonio, TX, US 1453 Arcetri, Osservatorio Astrofisico, Florence Arcetri, Osservatorio Astrofisico, Flor Arcetri, Osservatorio Astrofisico, Florence 1454 Arecibo Ionospheric Observatory, Arecibo, P.R. Arecibo Ionospheric Observatory, Arecibo, P.R. 1455 Copernicus Astronomical Center, Warszawa, Poland Copernicus Astronomical Center, Warszawa, Poland Copernicus Astronomical Center, Warsaw, Poland 1456 Observatorium Astronomiczne, Wroclaw, Poland Observwatorium Astronomiczne, Wroclaw, Poland Observatorium Astronomiczne, Wroclaw, Poland 1457 Southwest Texas State University, San Marcos, TX Southwest Texas State University, San Marcos, TX 1458 Kungl. Tekniska Hogskolan, Stockholm, Sweden Kungl. Tekniska Hogskolan, Stockholm, Sweden 1459 Bologna, Osservatorio Astronomico, Italy Bologna, Osservatorio Astronomico, Italy 1460 Thrace, Democritus University, Xanthe, Greece Thrace, Democritus University, Xanthe, Greece 1461 Univ. of Nebraska-Lincoln, Lincoln, NE, US Univ. of Nebraska-Lincoln, Lincoln, NE, US 1462 Yunnan Observatory, Kunming, Yunnan, China Yunnan Observatory, Kunming, Yunnan, China 1463 Inst. Nacional de Astrofisica, Puebla, Mexico Inst. Nacional de Astrofisica, Puebla, Mexico 1464 NASA, Johnson Space Center, Houston, Tex. NASA, Johnson Space Center, Houston, Tex. 1465 Dutch Meteor Society, Leiden, Netherlands Dutch Meteor Society, Leiden, Netherlands 1466 U.S. Navy, Naval Observatory, Washington, DC U.S. Navy, Naval Observatory, Washington, DC 1467 USAF, Phillips Laboratory, Sunspot, NM USAF, Phillips Laboratory, Sunspot, NM 1468 Argonne National Laboratory, Argonne, Ill. Argonne National Laboratory, Argonne, Ill. 1469 Inst. d'Estudis Catalans, Barcelona, Spain Inst. d'Estudis Catalans, Barcelona, Spain 1470 SETI Enterprises, Moffett Field, CA, US SETI Enterprises, Moffett Field, CA, US 1471 Waikato Univ., Hamilton, New Zealand Waikato Univ., Hamilton, New Zealand 1472 Laboratorium voor Ruimteonderzoek Laboratorium voor Ruimteonderzoek 1473 NSF, Div. of Astronomical Sciences, Washington, DC NSF, Div. of Astronomical Sciences, Washington, DC 1474 University of Nigeria, Nsukka, Nigeria University of Nigeria, Nsukka, Nigeria 1475 Michigan State Univ., East Lansing, MI, US Michigan State Univ., East Lansing, MI, US 1476 Unviersity of Iowa, Iowa City, IA, US Unviersity of Iowa, Iowa City, IA, US University of Iowa, Iowa City, IA, US 1477 Niels Bohr Inst., Copenhagen, Denmark Niels Bohr Inst., Copenhagen, Denmark 1478 Universidad de Los Andes, Merida, Venezuela Universidad de Los Andes, Merida, Venezuela 1479 Warner and Swasey Observatory, Cleveland, Ohio Warner and Swasey Observatory, Cleveland, Ohio 1480 Apple Computer, Inc., Cupertino, CA Apple Computer, Inc., Cupertino, CA 1481 Belfast Queen's Univ., United Kingdom Belfast Queen's Univ., United Kingdom Belfast, Queen's Univ., United Kingdom 1482 Universidad Simon Bolivar, Caracas, Venezuela Universidad Simon Bolivar, Caracas, Venezuela 1483 Obserwatorium Astronomiczne, Warsaw, Poland Obserwatorium Astronomiczne, Warsaw, Poland Obserwatorium Astronomiczne, Krakow, Poland Observatorium Astronomiczny, Warsaw, Poland 1484 The Aerospace Corporation, Los Angeles, CA, US The Aerospace Corporation, Los Angeles, CA, US 1485 Universite de Montreal, Montreale, Quebec, Canada Universite de Montreal, Montreale, Quebec, Canada Universite de Montreal, Montreal, Quebec, Cannada 1486 Fermi National Accelerator Lab., Batavia, IL Fermi National Accelerator Lab., Batavia, IL 1487 Univ. for CHE, Potchefstroom, South Africa Univ. of CHE, Potchefstroom, South Africa Univ. for CHE, Potchefstroom, South Africa 1488 International Latitude Observatory, Mizusawa, Japan International Latitude Observatory, Mizusawa, Japan 1489 CNR, Laboratorio di Fisica Cosmica e Tecnologie Relative CNR, Laboratorio di Fisica Cosmica e Tecnologie Relative 1490 SRON, Laboratory for Space Research SRON, Laboratory for Space Research 1491 CNR, Laboratorio di Cosmo-geofisica CNR, Laboratorio di Cosmo-geofisica 1492 Hartebeesthoek Radio Astronomy Observatory, PO Box 443, Krugersdorp 1740, South Africa Hartebeesthoek Radio Astronomy Observatory, PO Box 443, Krugersdorp 1740, South Africa 1493 Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy 1494 Osservatorio Astronomico, Strada Osservatorio 20, I-10025, Pino Torinese, Italy Osservatorio Astronomico, Strada Osservatorio 20, I-10025, Pino Torinese, Italy 1495 Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, South Africa Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, South Africa Hartebeesthoek Radio Astronomy Observatory, Krugersdorf, South Africa 1496 Edinburgh, Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, Australia Edinburgh, Royal Observatory, U.K. Schmidt Telescope Unit, Coonabarabran, Australia 1497 Leiden Observatory, PO Box 9513, 2300 RA, Leiden, The Netherlands Leiden Observatory, PO Box 9513, 2300 RA, Leiden, The Netherlands 1498 Osservatorio Astronomico di Bologna, via Zamboni 33, I-40126 Bologna, Italy Osservatorio Astronomico di Bologna, via Zamboni 33, I-40126 Bologna, Italy Osservatorio Astronomico di Bologna, Via Zamboni 33, I-40126 Bologna, Italy 1499 Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, CB3 0EZ Royal Greenwich Observatory, Madingley Road, Cambridge CB3 0EZ, CB3 0EZ 1500 Compton Observatory Science Support Center, Greenbelt, MD Compton Observatory Science Support Center, Greenbelt, MD 1501 Sachs/Freeman Associates, Bowie, MD Sachs/Freeman Associates, Bowie, MD Sachs Freeman Associates, Bowie, MD 1502 Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia Australia Telescope National Facility, PO Box 76, Epping, NSW 2121, Australia Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW, 2121, Ausralia The Australian Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia The Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia Australia Telescope National Facility, CSIRO, PO Box 76, Epping NSW 2121, Australia Australia Telescope National Facility, CSIRO, PO Box 76 Epping, NSW 2121, Australia Australia Telescope National Facility CSIRO, PO Box 76, Epping NSW2121, Australia 1503 Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago, Chile Ministerio de Educacion de Chile, Instituto Isaac Newton, Santiago, Chile Ministerio de Education de Chile, Instituto Isaac Newton, Santiago, Chile 1504 Instituto de Pesquisas Espaciais, Sao Jose dos Campos, Sao Paulo, Brazil Instituto de Pesquisas Espaciais, Sao Jose dos Campos, Sao Paulo, Brazil Instituto de Pesquisas Espaciais, Sao Josedos Campos, Sao Paulo, Brazil 1505 Comision Nacional de Investigacion del Espacio, Torrejon de Ardoz, Spain Comision Nacional de Investigacion del Espacio, Torrejon de Ardoz, Spain 1506 Cracow Pedagogical Univ., Krakow, Poland Cracow Pedagogical Univ., Krakow, Poland 1507 Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland N. Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland N. Copernicus Astronomical Centre, Bartycka 18, 00-716 Warsaw, Poland Copernicus Astronomical Centre, Bartycka 18, 00-716 Warsaw, Poland Copernicus Astronomical Center, Bartycka 18, 00-716 Warszawa, Poland Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland N. Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland N. Copernicus Astronomical Centre, Bartycka 18, 00-716 Warsaw, Poland Copernicus Astronomical Centre, Bartycka 18, 00-716 Warsaw, Poland Copernicus Astronomical Center, Bartycka 18, 00-716 Warszawa, Poland 1508 Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK 1509 Magyar Tudomanyos Akademia, Kozponti Fizikai Kutato Intezet, Budapest, Hungary Magyar Tudomanyos Akademia, Kozponti Fizikai Kutato Intezet, Budapest, Hungary Magyar Tudomanyos Akademia, Kozponti Fizikai Kutato Intezete, Budapest, Hungary 1510 CONICET, Instituto Argentino de Radioastronomia, Villa Elisa, Argentina CONICET, Instituto Argentino de Radioastronomia, Villa Elisa, Argentina 1511 Nuffield Radio Astronomy Laboratories, Jodrell Bank, Lower Withington, Macclesfield, Cheshire SK11 9DL Nuffield Radio Astronomy Laboratories, Jodrell Bank, Lower Withington, Macclesfield, Cheshire SK11 9DL 1512 Physics and Astronomy Department, University of California, Los Angeles, California 90024, USA Physics and Astronomy Department, University of California, Los Angeles, California 90024, USA 1513 Astronomy Department, University of California, Los Angeles, CA 90095, USA Astronomy Department, University of California, Los Angeles, CA 90095-1562, USA Astronomy Department, University of California, Los Angeles, CA 90095, USA Astronomy Department, University of California, Los Angeles, CA 90095-1562, USA Astronomy Department, University of California, Los Angeles, CA 90095, USA 1514 Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA 1515 St. Andrews, University, Observatory, St. Andrews, Scotland St. Andrews, University, Observatory, St. Andrews, Scotland St. Andrews, University Observatory, St. Andrews, Scotland St. Andrews University Observatory, St. Andrews, Scotland 1516 Universite Paris-Sud, Orsay, France Universite Paris-Sud, Orsay, France 1517 Department of Physics, University of Southampton, Southampton SO17 1BJ, UK Department of Physics, University of Southampton, Southampton SO17 1BJ, UK Department of Physics, University of Southampton, Southampton SO17 1BJ 1518 Missouri-Columbia, University, Columbia Missouri-Columbia, University, Columbia 1519 St. Mary's University, Halifax, Canada St. Mary's University, Halifax, Canada 1520 Theoretical Physics, Department of Physics, 1 Keble Road, Oxford OX1 3NP, UK Theoretical Physics, Department of Physics, 1 Keble Road, Oxford OX1 3NP, UK Theoretical Physics, Department of Physics, 1 Keble Road, Oxford OX1 3NP 1521 Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH, UK Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH, UK Astronomy Centre, MAPS, University of Sussex, Falmer, Brighton BN1 9QH, UK Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH, UK Astronomy Centre, MAPS, University of Sussex, Falmer, Brighton BN1 9QH, UK 1522 Physics Department, University of Durham, South Road, Durham DH1 3LE Physics Department, University of Durham, South Road, Durham DH1 3LE 1523 Astronomy Department, University of Cape Town, Rondebosch, 7700, South Africa Astronomy Department, University of Cape Town, Rondebosch, 7700, South Africa Astronomy Department, University of Cape Town, Rondebosch, 7700 South Africa 1524 Astronomy Department, University of Washington, Seattle, WA 98195, USA Astronomy Department, University of Washington, Seattle, WA 98195, USA 1525 Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK Department of Physics, University of Durham, South Road, Durham DH1 3LE 1526 Vilnius University, Vilnius, Lithuania Vilnius University, Vilnius, Lithuania 1527 Indiana Univ. South Bend, South Bend, IN, US Indiana Univ. South Bend, South Bend, IN, US 1528 Astrophysics, Oxford University, Keble Road, Oxford OX1 3RH Astrophysics, Oxford University, Keble Road, Oxford OX1 3RH Astrophysics, Oxford University, Keble Road, Oxford OX1 3RH, UK 1529 Institute for Molecular Science, Okazaki, Aichi, Japan Institute for Molecular Science, Okazaki, Aichi, Japan 1530 Harvard-Smithsonian Centre for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA Harvard-Smithsonian Center for Astrophysics, MS-10, 60 Garden Street, Cambridge, MA 02138, USA Harvard-Smithsonian Centre for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-4, Cambridge, MA 02138, USA Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 01218, USA Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge MA 02138, USA 1531 Astrophysics, Department of Physics, Keble Road, Oxford OX1 3RH Astrophysics, Department of Physics, Keble Road, Oxford OX1 3RH 1532 American Science and Engineering, Inc., Cambridge, MA American Science and Engineering, Inc., Cambridge, MA 1533 A. F. Ioffe Institute for Physics and Technology, 194021 St. Petersburg, Russia A.F.Ioffe Institute for Physics and Technology, 194021 St Petersburg, Russia A. F. Ioffe Institute for Physics and Technology, 194021 St. Petersburg, Russia A. F. Ioffe Institute for Physics & Technology, 194021 St. Petersburg, Russia 1534 University of Oxford, Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH University of Oxford, Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH University of Oxford, Department of Astrophysics, Nuclear Physics Building, Keble Road, Oxford OX1 3RH, UK 1535 Slovak Academy of Sciences, Astronomical Institute, Bratislava, Czechoslovakia Slovak Academy of Sciences, Astronomical Institute, Bratislava, Czechoslovakia 1536 Czech Academy of Sciences, Astronomical Inst., Ondrejov, Czech Republic Czech Academy of Sciences, Astronomical Inst., Ondrejov, Czech Republic 1537 Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy Osservatorio Astronomico di Brera, via Brera 28, 20121 Milano, Italy Osservatorio Astronomico di Brera, Via Brera 28, I-20121 Milano, Italy Osservatorio Astronomico di Brera, Via Brera 28, 20121 Milano, Italy 1538 CNR, Laboratorio di Fisica Cosmica e Tecnologie Relative, Milan, Italy CNR, Laboratorio di Fisica Cosmica e Tecnologie Relative, Milan, Italy CNR, Laboratorio di Fisica Cosmica e Tecnologie Relative, Palermo, Italy CNR, Laboratorio di Fisica Cosmica e Technologie Relative, Milan, Italy CNR, Laboratorio di Fisica Cosmica e Technologie Relative, Palermo, Italy CNR, Laboratorio di Fisica Cosmica e Technologia Relativa, Milan, Italy CNR, Laboratorio de Fisica Cosmica e Tecnologie Relative, Milan, Italy CNR, Laboratorio Fisica Cosmica e Tecnologie Relative, Milan, Italy 1539 Observatorio de Cordoba, Cordoba, Argentina Observatorio de Cordoba, Cordoba, Argentina 1540 Inst. de Astronomia y Fisica del Espacio, Buenos Aires, Argentina Inst. de Astronomia y Fisica del Espacio, Buenos Aires, Argentina 1541 Inst. Nacional de Astrofisica, Optica, y Electronica, Tonantzintla, Mexico Inst. Nacional de Astrofisica, Optica, y Electronica, Tonantzintla, Mexico Inst. Nacional de Astrofisica, Optica y Electronica, Tonantzintla, Mexico 1542 European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching-bei-Munchen, Germany European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching-bei-Munchen, Germany 1543 Osservatorio Astronomico di Trieste, Via GB Tiepolo 11 34131, Trieste, Italy Osservatorio Astronomico di Trieste, Via GB Tiepolo 11 34131, Trieste, Italy 1544 APS Division, Department of Pure and Applied Physics, Queen's University, Belfast BT7 1NN, UK APS Division, Department of Pure and Applied Physics, Queen's University, Belfast BT7 1NN, UK 1545 South African Astronomical Observatory, PO Box 9, 7935 Observatory, South Africa South African Astronomical Observatory, PO Box 9, 7935 Observatory, South Africa 1546 Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA 1547 Department of Astronomy, University of Washington, Seattle, WA 98195, USA Department of Astronomy, University of Washington, Seattle, WA 98195, USA 1548 Copenhagen University Observatory, Lster Voldgade 3, DK-1350 Copenhagen, Denmark Copenhagen University Observatory, Lster Voldgade 3, DK-1350 Copenhagen, Denmark 1549 University of Oxford, Astrophysics and Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK University of Oxford, Astrophysics and Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK 1550 University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH 1551 Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, Postfach 1523, D-85740 Garching bei Munchen, Germany Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, Postfach 1523, D-85740 Garching bei Munchen, Germany 1552 Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield SK11 9DL, Cheshire, UK Nuffield Radio Astronomy Laboratories, University of Manchester, Jodrell Bank, Macclesfield SK11 9DL, Cheshire, UK 1553 Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Saint-Vallier-de-Thiey, Alpes-Maritimes, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Saint Vallier de Thiey, Alpes-Maritimes, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Saint-Vallier-de-Thiey, Alpes-Maritimes, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Saint-Vallier-de-Thiery, Alpes-Maritimes, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Saint Vallier-de-Thiey, Alpes-Maritimes, France 1554 Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Saint-Vallier-de-Thiey, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Saint-Vallier-de-Thiey, France 1555 Centre d'Etudes et de Recherches de la Machine-Outil, Saint-Martin-d'Heres, France Centre d'Etudes et de Recherches de la Machine-Outil, Saint-Martin-d'Heres, France Centre d'Etudes et de Recherches de la Machine-Outil, Saint-Martin-d'Heres, Isere, France Centre-d'Etudes et de Recherches de la Machine-Outil, Saint-Martin-d'Heres, France Centre d'Etudes et de Recherches de la Machine-Outil, Saint-Martin d'Heres, France 1556 Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Grasse, Alpes-Maritimes, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Grasse, Alpes-Martimes, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Grasse, Alps-Maritimes, France Centre d'Etudes et de Recherches Geodinamiques et Astronomiques, Grasse, Alpes-Maritimes, France Centre d'Etudes et de Recherches Geodynamiques et Astronomiques, Grasse, Alpes-Maritimes, France 1557 University of Oxford, Department of Astrophysics, Nuclear & Astrophysics Laboratory, Keble Road, Oxford OX1 3RH University of Oxford, Department of Astrophysics, Nuclear & Astrophysics Laboratory, Keble Road, Oxford OX1 3RH University of Oxford, Department of Astrophysics, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX13RH 1558 University of Oxford, Department of Physics, Astrophysics, Keble Road, Oxford OX1 3RH University of Oxford, Department of Physics, Astrophysics, Keble Road, Oxford OX1 3RH University of Oxford, Department of Physics, Astrophysics, Keble Road, Oxford OX1 3RH, UK 1559 Oxford University Physics Department, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK Oxford University Physics Department, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK 1560 Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH 1561 London, University College, Mullard Space Sciences Laboratory, Dorking, Surrey, England London, University College, Mullard Space Sciences Laboratory, Dorking, Surrey, England London, University College, Mullard Space Science Laboratory, Dorking, Surrey, England 1562 Department of Physics, University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK Department of Physics, University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK Department of Astrophysics, University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK 1563 Department of Physics and Astronomy, University of Manchester, Schuster Laboratory, Oxford Road, Manchester M13 9PL, UK Department of Physics and Astronomy, University of Manchester, Schuster Laboratory, Oxford Road, Manchester M13 9PL, UK 1564 Department of Physics and Astronomy, University of Wales College of Cardiff, PO Box 913, Cardiff CF2 3YB Department of Physics and Astronomy, University of Wales College of Cardiff, PO Box 913, Cardiff CF2 3YB Department of Physics and Astronomy, University of Wales, College of Cardiff, PO Box 913, Cardiff CF2 3YB 1565 Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ 1566 Nuffield Radio Astronomy Observatory, Jodrell Bank, Ches., England Nuffield Radio Astronomy Observatory, Jodrell Bank, Ches., England 1567 Instituto Argentino di Radioastronomia, Villa Elisa, Argentina Instituto Argentino di Radioastronomia, Villa Elisa, Argentina 1568 Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, UK Department of Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, UK Department of Physics, University of Oxford, Keble Road, Oxford OX1 3RH, UK 1569 Department of Physics, Keele University, Keele ST5 5BG, UK Department of Physics, Keele University, Keele ST5 5BG, UK 1570 Department of Physics, The University, Southampton SO17 1BJ Department of Physics, The University, Southampton SO17 1BJ Department of Physics, The University, Southampton SO9 5NH 1571 Department of Astronomy, University of Texas, Austin, TX 78712, USA Department of Astronomy, University of Texas, Austin, TX 78712, USA 1572 Department of Physics, The Open University, Milton Keynes Department of Physics, The Open University, Milton Keynes 1573 Department of Physics, Kyoto University, Kyoto 606-01, Japan Department of Physics, Kyoto University, Kyoto 606-01, Japan 1574 School of Physics, University of Melbourne, Parkville, Victoria 3052, Australia School of Physics, University of Melbourne, Parkville, Victoria 3052, Australia 1575 Department of Physics, Peking University, Beijing 100871, China Department of Physics, Peking University, Beijing 100871, China 1576 Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa Department of Astronomy, University of Cape Town, Rondebosch 7700, Cape, South Africa 1577 Department of Astronomy, University of Minnesota, Minneapolis, MN 55455, USA Department of Astronomy, University of Minnesota, Minneapolis, MN 55455, USA 1578 Department of Physics, Keele University, Keele, Staffordshire ST5 5BG Department of Physics, Keele University, Keele, Staffordshire ST5 5BG 1579 Department of Physics, Yamagata University, Yamagata 990, Japan Department of Physics, Yamagata University, Yamagata 990, Japan 1580 Department of Physics, University of Queensland, St Lucia 4072, Australia Department of Physics, University of Queensland, St Lucia 4072, Australia 1581 Department of Astronomy, University of California, Berkeley, CA 94720, USA Department of Astronomy, University of California, Berkeley, CA, 94720, USA Department of Astronomy, University of California, Berkeley, CA 94720-3411, USA Department of Astronomy, University of California, Berkeley, CA 94705, USA Department of Astronomy, University of California, Berkeley, CA 94720, USA 1582 Department of Physics, University of Leeds, Leeds LS2 9JT Department of Physics, University of Leeds, Leeds LS2 9JT 1583 Australian Defence Force Academy, Campbell, Australia Australian Defence Force Academy, Campbell, Australia 1584 Department of Physics, University of Tasmania, GPO Box 252C, Hobart, Tasmania, Australia 7001 Department of Physics, University of Tasmania, GPO Box 252C, Hobart, Tasmania, Australia 7001 1585 Department of Astronomy, Padova University, Vicolo dell'Osservatorio 5, 35122 Padova, Italy Department of Astronomy, Padova University, Vicolo dell'Osservatorio 5, 35122 Padova, Italy Department of Astronomy, Padova University, vicolo dell'Osservatorio 5, I-35122 Padova, Italy 1586 Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse 1, D-85740 Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse 1, D-85740 Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, D-8046, Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestrische Physik, Giessenbachstrasse, 85740 Garching bei Munchen, Germany Max-Planck-Institut fur Extraterrestriche Physik, Giessenbachstrasse, D-8046 Garching bei Munchen, Germany 1587 School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT 1588 School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT 1589 Institute of Astronomy, Cambridge University, Madingley Road, Cambridge CB3 0HA, UK Institute of Astronomy, Cambridge University, Madingley Road, Cambridge CB3 0HA, UK 1590 Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ Institute for Astronomy, Universe of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK 1591 Physics Department, University of Durham, South Road, Durham DH1 3LE, UK Physics Department, University of Durham, South Road, Durham DH1 3LE, UK 1592 Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy Dipartimento di Astronomia dell'Universita di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio 5, I-35122 Padova, Italy Dipartimento di Astronomia, Universita di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio 5, I-35122, Italy Dipartimento di Astronomia, Universita di Padova, vicolo dell'Osservatorio, 5, I-35122 Padova, Italy Dipartimento di Astronomia, Universita' di Padova, vicolo dell'Osservatorio 5, I-35122, Padova, Italy 1593 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA 1594 Institute of Astronomy, The Observatories, Madingley Road, Cambridge CB3 0HA, UK Institute of Astronomy, The Observatories, Madingley Road, Cambridge CB3 0HA, UK 1595 Center for Particle Astrophysics, University of California, Berkeley, CA 94720, USA Center for Particle Astrophysics, University of California, Berkeley, CA 94720, USA 1596 Berkeley Astronomy Department, University of California, Berkeley, CA 94720, USA Berkeley Astronomy Department, University of California, Berkeley, CA 94720, USA 1597 Astronomy Department, University of Sydney, Sydney NSW 2006, Australia Astronomy Department, University of Sydney, Sydney NSW 2006, Australia 1598 Department of Physics, Queen's University, Kingston, Ontario, K7L 3N6, Canada Department of Physics, Queen's University, Kingston, Ontario, K7L 3N6, Canada 1599 Department of Theoretical Physics, School of Physics, University of Sydney, NSW 2006, Australia Department of Theoretical Physics, School of Physics, University of Sydney, NSW 2006, Australia 1600 Department of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB Department of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB Division of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB Department of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB, UK Department of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB Division of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB Department of Physical Sciences, University of Hertfordshire, College Lane, Hatfield, Herts AL10 9AB, UK 1601 Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA 1602 Department of Physics, Queen's University, Kingston, ON K7L 3N6, Canada Department of Physics, Queen's University, Kingston, ON K7L 3N6, Canada 1603 Astronomy Department, University of California, Los Angeles, California 90095, USA Astronomy Department, University of California, Los Angeles, California 90095, USA 1604 Astronomy Department, University of Washington, Box 351580, Seattle, WA 98195-1580, USA Astronomy Department, University of Washington, Box 351580, Seattle, WA 98195-1580, USA 1605 Department of Physics, The University, Southampton SO17 1BJ, UK Department of Physics, The University, Southampton SO17 1BJ, UK 1606 Department of Physics, Ochanomizu University, Bunkyo, Tokyo 112, Japan Department of Physics, Ochanomizu University, Bunkyo, Tokyo 112, Japan 1607 Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019, USA Department of Physics and Astronomy, University of Oklahoma, Norman, OK 73019, USA 1608 Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu HI 96822, USA 1609 Physics Department, University of York, Heslington, York YO1 5DD, UK Physics Department, University of York, Heslington, York YO1 5DD, UK 1610 Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA 1611 Department of Physics & Astronomy, University of Rochester, Rochester, NY, 14627, USA Department of Physics & Astronomy, University of Rochester, Rochester, NY, 14627, USA 1612 Division of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB, UK Division of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB, UK Division of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB Division of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB, UK Division of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB 1613 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK 1614 Department of Physical Sciences, University of Hertfordshire, Hatfield, Hertfordshire AL10 9AB Department of Physical Sciences, University of Hertfordshire, Hatfield, Hertfordshire AL10 9AB 1615 Royal Australian Air Force Academy, Melbourne, Australia Royal Australian Air Force Academy, Melbourne, Australia Royal Australia Air Force Academy, Melbourne, Australia 1616 Northwestern University, Evanston, IL, US Northwestern University, Evanston, IL, US 1617 Washington University, St. Louis, MO, US Washington University, St. Louis, MO, US 1618 Steward Observatory, University of Arizona, 2nd & Cherry Avenue, Tucson, AZ 85721, USA Steward Observatory, University of Arizona, 2nd & Cherry Avenue, Tucson, AZ 85721, USA 1619 Astronomy Department, University of Cape Town, Rondebosch 7700, Cape Town, South Africa Astronomy Department, University of Cape Town, Rondebosch 7700, Cape Town, South Africa 1620 Department of Physics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK Department of Physics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK Department of Astrophysics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH, UK Department of Physics, Nuclear Physics Laboratory, Keble Road, Oxford OX1 3RH 1621 Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803-4001, USA Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803-4001, USA 1622 Department of Physics and Astronomy, Iowa State University, Ames, IA 50211, USA Department of Physics and Astronomy, Iowa State University, Ames, IA 50211, USA 1623 Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504, USA Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287-1504, USA 1624 Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA Department of Physics an Astronomy, Northwestern University, Evanston, IL 60208, USA 1625 School of Physics, University of New South Wales, Sydney, NSW 2052, Australia School of Physics, University of New South Wales, Sydney, NSW 2052, Australia 1626 Physics Department, University of Tasmania, GPO Box 252C, Hobart, Tasmania, Australia 7001 Physics Department, University of Tasmania, GPO Box 252C, Hobart, Tasmania, Australia 7001 1627 Research Centre for Theoretical Astrophysics, School of Physics, The University of Sydney, NSW 2006, Australia Research Centre for Theoretical Astrophysics, School of Physics, The University of Sydney, NSW 2006, Australia Research Center for Theoretical Astrophysics, School of Physics, The University of Sydney, NSW 2006, Australia 1628 Research Centre for Theoretical Astrophysics, University of Sydney, NSW 2006, Australia Research Centre for Theoretical Astrophysics, University of Sydney, NSW 2006, Australia 1629 Astrophysics Department, University of Sydney, NSW 2006, Australia Astrophysics Department, University of Sydney, NSW 2006, Australia 1630 Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan 1631 Center for EUV Astrophysics, 2150 Kittredge Street, University of California, Berkeley, CA 94720, USA Center for EUV Astrophysics, 2150 Kittredge Street, University of California, Berkeley, CA 94720, USA 1632 Department of Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia Department of Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia 1633 School of Physics, University of Sydney, NSW 2006, Australia School of Physics, University of Sydney, NSW, 2006, Australia School of Physics, The University of Sydney, NSW 2006, Australia School of Physics, University of Sydney, NSW 2006, Australia 1634 Potchefstroom University for Christian Higher Education, Republic of South Africa Potchefstroom University for Christian Higher Education, Republic of South Africa 1635 School of Physics, University College, ADFA, UNSW, Canberra, ACT 2600, Australia School of Physics, University College, ADFA, UNSW, Canberra, ACT 2600, Australia 1636 Department of Physics, MIT, Cambridge, MA 02139, USA Department of Physics, MIT, Cambridge, MA 02139, USA 1637 Institute of Astronomy, Univ. of Cambridge, United Kingdom Institute of Astronomy, Univ. of Cambridge, United Kingdom 1638 National Tsing Hua University, Hsinchu, Republic of China National Tsing Hua University, Hsinchu, Republic of China 1639 Institute of Physical and Chemical Research, Wako, Japan Institute of Physical and Chemical Research, Wako, Japan 1640 Department of Physics, Oxford, UK Department of Physics, Oxford, UK 1641 WIP-Projekt Astrometrie der Universitat Postdam, An der Sternwarte 16, D-14482 Potsdam, Germany WIP-Projekt Astrometrie der Universitat Postdam, An der Sternwarte 16, D-14482 Potsdam, Germany 1642 Royal Greenwich Observatory, Apartado 321, Santa Cruz de La Palma, 38700 Tenerife, Canary Islands, Spain Royal Greenwich Observatory, Apartado 321, Santa Cruz de la Palma, 38780 Tenerife, Canary Islands, Spain Royal Greenwich Observatory, Apartado 321, Santa Cruz de La Palma, 38700 Tenerife, Canary Islands, Spain 1643 Mount Stromlo and Siding Spring Observatories, The Australian National University, Canberra, ACT 0200, Australia Mount Stromlo and Siding Spring Observatories, The Australian National University, Canberra, ACT 0200, Australia 1644 Research Centre for Theoretical Astrophysics, School of Physics A28, University of Sydney, NSW 2006, Australia Research Centre for Theoretical Astrophysics, School of Physics A28, University of Sydney, NSW 2006, Australia Research Centre for Theoretical Astrophysics, School of Physics, University of Sydney, NSW 2006, Australia 1645 Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR Akademiia Nauk SSSR, Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Troitsk, USSR 1646 AN SSSR, Sibirskii Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR AN SSSR, Sibirskii Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR AN SSSR, Sibirskii Institut Zemnogo Magnetizma, Ionosfery i Rasprostraneniia Radiovoln, Irkutsk, USSR 1647 Department of Physics and Astronomy, University of Wales, PO Box 913, Cardiff, Wales Department of Physics and Astronomy, University of Wales, PO Box 913, Cardiff, Wales 1648 Department of Physics & Astronomy, Georgia State University, Atlanta, GA 30303-3083, USA Department of Physics & Astronomy, Georgia State University, Atlanta, GA 30303-3083, USA Department of Physics & Astronomy, Georgia State University, Atlanta, GA 30303, USA 1649 Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore MD 21218, USA Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles St, Baltimore, MD 21218, USA 1650 Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK Mullard Space Science Laboratory, University College London, Holmbury Saint Mary, Dorking, Surrey RH5 6NT, UK Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking RH5 6NT, UK Mullard Space Science Laboratory, University College London, Holmbury StMary, Dorking, Surrey RH5 6NT 1651 Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, UK Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, UK Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK 1652 Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN, UK Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN, UK Department of Pure and Applied Physics, Queen's University of Belfast, Belfast BT7 1NN, UK 1653 Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK 1654 Steward Observatory, University of Arizona, Tucson, AZ 85721, USA Steward Observatory, University of Arizona, Tucson, AZ 85721, USA Steward Observatory, University of Arizona, Tucson, AZ 85721 USA 1655 Department of Physics and Astronomy, Johns Hopkins University, Homewood Campus, Baltimore, MD 21218, USA Department of Physics and Astronomy, Johns Hopkins University, Homewood Campus, Baltimore, MD 21218, USA 1656 Department of Physics and Astronomy, University of Wales, Cardiff, PO Box 913, Cardiff CF2 3YB, UK Department of Physics and Astronomy, University of Wales, Cardiff, PO Box 913, Cardiff CF2 3YB, UK Department of Physics and Astronomy, University of Wales, Cardiff, PO Box 913, Cardiff CF2 3YB 1657 Department of Physics and Astronomy, University of Massachusetts, Amherst, MA 01003-4525, USA Department of Physics and Astronomy, University of Massachusetts, Amherst, MA 01003-4525, USA 1658 Department of Physics and Astronomy, University of Wales, Cardiff CF2 3YB, UK Department of Physics and Astronomy, University of Wales, Cardiff CF2 3YB, UK 1659 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS, UK Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, University of London, Mile End Road, London, UK 1660 Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS Astronomy Unit, School of Mathematical Sciences, Queen Mary & Westfield College, Mile End Road, London E1 4NS, UK Astronomy Unit, School of Mathematical Sciences, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK Astronomy Unit, School of Mathematical Sciences,Queen Mary and Westfield College, Mile End Road, London E1 4NS Astronomy Unit, School of Mathematical Sciences, Queen Mary & Westfield College, Mile End Road, London E1 4NS 1661 Astronomy Unit, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS Astronomy Unit, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS Astronomy Unit, Queen Mary and Westfield College, University of London, Mile End Road, London E1 4NS, UK