1. California Institute of Technology, Department of Astronomy, Pasadena, California, United States
2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, United States
3. W. M. Keck Observatory, Kamuela, Hawaii, United States
4. Northwestern University, Center for Interdisciplinary Exploration and Research in Astrophysics, Department of Physics and Astronomy, Evanston, Illinois, United States
5. University of California, San Diego, Center for Astrophysics and Space Sciences, La Jolla, California, United States
6. University of California, Department of Physics and Astronomy, Los Angeles, California, United States
7. University of California, Department of Physics, Santa Barbara, California, United States
8. University of California, Department of Astronomy and Astrophysics, Santa Cruz, California, United States
9. The Ohio State University, Department of Astronomy, Columbus, Ohio, United States
10. Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Bd de l’Observatoire, Nice cedex 4, France