1. Department of Physics, University of Warwick, Coventry CV4 7AL, UK
2. McDonald Observatory, University of Texas at Austin, 2515 Speedway, C1402, Austin, TX 78712, USA
3. Centre for Exoplanets and Habitability, University of Warwick, Coventry CV4 7AL, UK
4. Institut für Theoretische Physik und Astrophysik, University of Kiel, D-24098 Kiel, Germany
5. Lunar and Planetary Lab., University of Arizona, Tucson, AZ 85718, USA
6. Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
7. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281, USA
8. Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
9. Space Telescope Science Institute, Baltimore, MD 21218, USA
10. Department of Astronomy and Van Vleck Observatory, Wesleyan University, 96 Foss Hill Dr., Middletown, CT 06459, USA