1. Institute for Astronomy, University of Edinburgh , Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
2. Center for Astrophysics , Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
3. Instituto de Astrofísica de Canarias , 38200 La Laguna, Tenerife, Spain
4. Department Astrofísica, Universidad de La Laguna , 38206 La Laguna, Tenerife, Spain
5. Vanderbilt University, Department of Physics & Astronomy , 6301 Stevenson Center Ln., Nashville, TN 37235, USA
6. Fisk University, Department of Physics , 1000 18th Ave. N., Nashville, TN 37208, USA
7. Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA
8. Department of Astronomy, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
9. Department of Physics, and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology , Cambridge, MA 02139, USA
10. Komaba Institute for Science, The University of Tokyo , 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
11. NASA Ames Research Center , Moffett Field, CA 94035, USA
12. Department of Multi-Disciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo , 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
13. Caltech IPAC–NASA Exoplanet Science Institute 1200 E. California Ave , Pasadena, CA 91125, USA
14. Department of Physics and Astronomy, The University of North Carolina at Chapel Hill , Chapel Hill, NC 27599, USA
15. Google , Cambridge, MA 02142, USA
16. Astrobiology Center , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
17. NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA
18. Patashnick Voorheesville Observatory , Voorheesville, NY 12186, USA
19. SETI Institute , Mountain View, CA 94043, USA
20. Department of Astrophysical Sciences, Princeton University , 4 Ivy Lane, Princeton, NJ 08544, USA