Author affiliations
1 Cerro
Tololo Inter-American Observatory, National Optical Astronomy
ObservatoriesCerro Tololo Inter-American Observatory, National Optical
Astronomy Observatories, operated by the Association of Universities for
Research in Astronomy (AURA), Inc., under cooperative agreement with the
National Science Foundation., Casilla 603, La Serena,
Chile
2 Departamento de
Astronomía, Universidad de Chile, Casilla 36-D,
Santiago, Chile
3 Center for Space
Research, Massachusetts Institute of Technology, 37-518A, 77
Massachusetts Avenue, Cambridge, MA 02139
4 Department
of Astronomy, Columbia University, Mail Code 5242, New York, NY 10027
5 Kitt Peak
National Observatory, National Optical Astronomy Observatories, 950 North
Cherry Avenue, Tucson, AZ 85726
6 UCO/Lick
Observatory, University of California, 1156 High Street, Santa Cruz, CA
95064
7 Institute
for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI
96822
8 Department of
Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520
9 Space
Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD
21218
10 Sky
Publishing Corporation, 49 Bay State Road, Cambridge, MA 02138
11 Department
of Astronomy, University of Michigan, 830 Dennison Building, Ann Arbor, MI
48109
12 Department of Physics
and Astronomy, Rutgers University, P.O. Box 849, Piscataway,
NJ 08855
13 Current address: Institute for Astronomy, University of Edinburgh, Royal
Observatory, Blackford Hill, Edinburgh EH9 3HJ, Scotland,
UK
14 Current address: Steward Observatory, University of Arizona, 933 North
Cherry Avenue, Tucson, AZ 85721
15 Current address: Department of Astronomy, University of Michigan, 830
Dennison Building, Ann Arbor, MI 48109
16 Current address: Kitt Peak National Observatory, National Optical
Astronomy Observatories, 950 North Cherry Avenue, Tucson, AZ
85726
17 Hubble Fellow
18 Current address: NASA Goddard Space Flight Center, Code 681, Greenbelt,
MD 20771
19 Current address: Princeton University Observatory, Peyton Hall,
Princeton, NJ 08544
