1. Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
2. Department of Science, BMCC, City University of New York, New York, NY 10007, USA
3. Department of Astrophysics, Rose Center for Earth and Space, American Museum of Natural History, Central Park West at 79th Street, NY 10024, USA
4. Graduate Center, City University of New York, 365 5th Avenue, New York, NY 10016, USA
5. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Mail Code 249/17, 1200 E California Blvd, Pasadena, CA 91125, USA
6. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Mail Stop 169-221, Pasadena, CA 91109, USA
7. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 92420, USA
8. Berkeley Center for Cosmological Physics, Berkeley, CA 94720, USA
9. Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejército Libertador 441, Santiago, Chile
10. National Optical Astronomy Observatory, 950 N. Cherry Ave, Tucson, AZ 85719, USA
11. Center for Advanced Computing Research, California Institute of Technology, 1200 E California Blvd, Pasadena, CA 91125, USA
12. School of Physics, Korea Institute for Advanced Study, 85 Hoegiro, Dongdaemun-gu, Seoul 02455, Korea
13. Dunlap Institute, University of Toronto, Toronto, ON M5S 3H4, Canada
14. Department of Astronomy & Astrophysics, University of Toronto, Toronto, ON M5S 3H4, Canada
15. Perimeter Institute for Theoretical Physics, Waterloo, ON N2L 2Y5, Canada