Affiliation: | Max-Planck-Institut für Astrophysik, Karl Schwarzschild Str. 1, Postfach 1317, 85741 Garching, Germany;Max-Planck-Institut für Extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany;Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA;Apache Point Observatory, PO Box 59, Sunspot, NM 88349, USA |