| Institution: | 1. Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;2. Dept. of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;3. Cerro Tololo Interamerican Observatory, La Serena, Chile;4. Astronomy Department, Wellesley College, Wellesley, Massachusetts 02181, USA;5. Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA;6. Downs Laboratory of Physics, California Institute of Technology, 320-47, Pasadena, California 91125, USA;7. Mount Stromlo and Siding Spring Observatories, Research School of Physical Sciences, Australian National University, Canberra, Australia;8. Observatorie de Paris, 92190 Meudon, France |
