1. Laboratoire d’Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
2. Exzellenzcluster Universe, Boltzmannstr. 2, D-85748 Garching, Germany
3. Ludwig-Maximilians-Universität, Universitäts-Sternwarte, Scheinerstr. 1, D-81679 München, Germany
4. Department of Physics, University of California, Davis, CA 95616, USA
5. Subaru Telescope, 650 N Aohoku Pl, Hilo, HI 96720, USA
6. Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94035, USA
7. STAR Institute, Quartier Agora - Allée du six Août, 19c B-4000 Liège, Belgium
8. Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
9. Institute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, Taiwan
10. Physik Department, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany
11. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
12. National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan