1. Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
2. Institute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, Taiwan
3. Physik-Department, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany
4. Laboratoire d'Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
5. Department of Physics, University of California, Davis, CA 95616, USA
6. STAR Institute, Quartier Agora – Allée du six Août, 19c B-4000 Liège, Belgium
7. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
8. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
9. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
10. Department of Astronomy, Beijing Normal University, Beijing 100875, China
11. Exzellenzcluster Universe, Boltzmannstr. 2, D-85748 Garching, Germany
12. Ludwig-Maximilians-Universität, Universitäts-Sternwarte, Scheinerstr. 1, D-81679 München, Germany
13. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94035, USA
14. Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
15. Physics Department, University of California, Santa Barbara, CA 93106, USA
16. Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn, Germany
17. ESO – European Southern Observatory, D-85748 Garching bei München, Germany
18. Institute of Cosmology and Gravitation, University of Portsmouth, Burnaby Rd, Portsmouth PO1 3FX, UK
19. Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700 AV Groningen, the Netherlands