[1] NASA, Exoplanets & Stellar Astrophys Lab, Goddard Space Flight Ctr GSFC, Code 667, Greenbelt, MD 20771 USA
[2] GSFC Sellers Exoplanet Environm Collaborat, Greenbelt, MD 20770 USA
[3] Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA
[4] Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA
[5] Fisk Univ, Dept Phys, 1000 17th Ave N, Nashville, TN 37208 USA
[6] NASA Goddard Space Flight Ctr, Exoplanets & Stellar Astrophys Lab, Code 667, Greenbelt, MD 20771 USA
[7] Univ Idaho, Dept Phys, Moscow, ID 83844 USA
[8] Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA
[9] Penn State Univ, Ctr Exoplanets & Habitable Worlds, 525 Davey Lab, University Pk, PA 16802 USA
[10] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA
[11] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
[12] Ohio State Univ, Dept Astron, 140 West 18th Ave, Columbus, OH 43210 USA
[13] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
[14] MIT, Dept Phys, Cambridge, MA 02139 USA
[15] MIT, Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[16] MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA
[17] MIT, Dept Aeronaut & Astronaut, Cambridge, MA 02139 USA
[18] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
[19] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
[20] Univ Bern, Ctr Space & Habitabil, NCCR PlanetS, Bern, Switzerland
[21] Open Univ, Sch Phys Sci, Milton Keynes MK7 6AA, Bucks, England
[22] SETI Inst, 189 Bernardo Ave,Suite 200, Mountain View, CA 94043 USA