1. Department of Physics, Institute for Particle Physics and Astrophysics, ETH Zurich, Zurich, Switzerland.
2. National Center of Competence in Research PlanetS, Bern, Switzerland.
3. Blue Marble Space Institute of Science, Seattle, Washington, USA.
4. SRON Netherlands Institute for Space Research, Utrecht, The Netherlands.
5. Leiden Observatory, University of Leiden, Leiden, The Netherlands.
6. Center for Astrophysics, Harvard-Smithsonian, Cambridge, Massachusetts, USA.
7. Division of Science, Mathematics, and Computing, Bard College, Annandale-on-Hudson, New York, USA.
8. Space Telescope Science Institute, Baltimore, Maryland, USA.