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. University of California, Center for Astrophysics and Space Science, San Diego, California, United States
4. University of California, Department of Physics and Astronomy, Los Angeles, California, United States
5. Northwestern University, Center for Interdisciplinary Exploration and Research in Astrophysics, Evanston, Illinois, United States
6. The Ohio State University, Department of Astronomy, Columbus, Ohio, United States
7. Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Nice, France