1. NASA Ames Research Center, Moffett Field, CA 94035, USA.
2. SETI Institute, Mountain View, CA 94043, USA.
3. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA.
4. Space Telescope Science Institute, Baltimore, MD 21218, USA.
5. San Jose State University, San Jose, CA 95192, USA.
6. University of California, Berkeley, Berkeley, CA 94720, USA.
7. Las Cumbres Observatory Global Telescope, Goleta, CA 93117,USA.
8. Aarhus University, 8000 Aarhus, Denmark.
9. University of Texas, Austin, TX 78712, USA.
10. Lowell Observatory, Flagstaff, AZ 86001, USA.
11. Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA 91109, USA.
12. Lawrence Hall of Science, Berkeley, CA 94720, USA.
13. National Optical Astronomy Observatory, Tucson, AZ 85719, USA.