1. Scientific Support Office, Directorate of Science and Robotic Exploration, ESA/ESTEC, Keplerlaan 1, NL-2201 AZ Noordwijk, the Netherlands
2. Sorbonne Universités, UPMC-CNRS, UMR7095, Institut d’Astrophysique de Paris, F-75014 Paris, France
3. Leiden Observatory, Leiden University, NL-2300 RA Leiden, the Netherlands
4. Cavendish Laboratory, University of Cambridge, 19 J. J. Thomson Ave., Cambridge CB3 0HE, UK
5. Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
6. Departamento de Astrofísica, Centro de Astrobiología, CSIC-INTA, Cra. de Ajalvir, E-28850 Madrid, Spain
7. Department of Physics, University of Oxford, Oxford OX1 3PU, UK
8. Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany
9. Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, DK-2100 Copenhagen, Denmark
10. European Space Agency, c/o STScI, 3700 San Martin Drive, Baltimore MD 21218, USA
11. NRC Herzberg, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada