1. MS 245-6, Astrophysics Branch, Space Science and Astrobiology Division, NASA Ames Research Center, Moffett Field, California 94035, United States
2. SETI Institute, 339 Bernardo Avenue, Suite 200, Mountain View, California 94043, United States
3. MS 258-2, NAS Facility, NASA Ames Research Center, Moffett Field, California 94035, United States
4. MS 245-3, Planetary Systems Branch, Space Science and Astrobiology Division, NASA Ames Research Center, Moffett Field, California 94035, United States