| Affiliation: |
| AA(Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721.), AB(Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721.), AC(Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104.; American Museum of Natural History, Department of Astrophysics, Central Park West at 79th Street, New York, NY 10023.), AD(Instituto de Astrofisica de Canarias, La Laguna, Tenerife E-38200, Spain.), AE(Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104.; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218.) |