¹ Department of Astronomy, Mail Stop 105-24, California Institute of Technology, Pasadena, CA 91125
² Mount Stromlo and Siding Spring Observatories, Institute of Advanced Studies, Australian National University, Private Bag, Weston Creek, ACT 2611, Australia
³ Department of Astronomy, New Mexico State University, Box 30001/Department 4500, Las Cruces, NM 88003-8001
⁴ Department of Astronomy, University of Michigan, 830 Dennison Building, 500 Church Street, Ann Arbor, MI 48109-1090
⁵ Hubble Fellow
⁶ Department of Atmospheric, Oceanic, and Space Sciences, Space Research Building, University of Michigan, Ann Arbor, MI 48109
⁷ Astrophysics Division, Space Sciences Department, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218
⁸ Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109-8099
⁹ Department of Astronomy, University of Wisconsin at Madison, 475 North Charter Street, Madison, WI 53706
¹⁰ Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218
¹¹ Department of Physics and Astronomy, Arizona State University, P.O. Box 871504, Tempe, AZ 85287
¹² Division of Geological and Planetary Sciences, Mail Stop 170-25, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125