1. Department of Physics & Astronomy, University of Western Ontario, London, Ontario, Canada
2. Institute for Earth and Space Exploration, University of Western Ontario, London, Ontario, Canada
3. SETI Institute, 189 Bernardo Avenue, Suite 100, Mountain View, California 94043, United States
4. Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, United States
5. van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
6. Leiden Observatory, Leiden University, Leiden, The Netherlands
7. University of Maryland, College Park, Maryland 20742, United States