1. Leiden
Institute of Chemistry, Leiden University, Leiden 2333CC, The Netherlands
2. Carl Sagan Center,
SETI Institute, NASA Ames Research Center, Moffett
Field, California 94035, United States
3. NASA Ames Research
Center, Moffett Field, California 94035, United States
4. Department
of Physics and Astronomy, California State Polytechnic University, Pomona, California 91768, United States
5. San Jose State University, San Jose, California 95112, United States