¹ Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, D-85748 Garching, Germany
² Department of Physics, Le Conte Hall, University of California, Berkeley, CA 94720, USA
³ Department of Astronomy, Campbell Hall, University of California, Berkeley, CA 94720, USA
⁴ Department of Physics and Astronomy, 430 Portola Plaza, University of California, Los Angeles, CA 90095-1547, USA
⁵ Department of Physics, University of California at Santa Barbara, Santa Barbara, CA 93106-9530, USA
⁶ California Institute of Technology, MS 105-24, Pasadena, CA 91125, USA
⁷ School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
⁸ Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, Padova I-35122, Italy
⁹ Istituto Nazionale di Astrofisica-Osservatorio Astronomico di Bologna, Via Gobetti 101, I-40129 Bologna, Italy
¹⁰ Service d'Astrophysique, CEA/Saclay, Orme des Merisiers, 91191 Gif-sur-Yvette, France
¹¹ Max-Planck-Institut für Astronomie, Königstuhl, D-69117 Heidelberg, Germany
¹² Institute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zürich, CH-8093, Switzerland
¹³ Center for Astrophysics, University of Science and Technology of China, 230026 Hefei, China
¹⁴ GEPI, Observatoire de Paris, CNRS, Université Denis Diderot, 5 Place Jules Janssen, 92190 Meudon, France
¹⁵ Institut d'Astrophysique Spatiale, UMR 8617, Université Paris Sud 11, 91400 Orsay, France
¹⁶ Denys Wilkinson Building, University of Oxford, Keble Road, Oxford OX1 3RH, UK
¹⁷ IAP, Paris, France
¹⁸ National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan
¹⁹ Institute of Earth, Atmosphere and Astronomy, BK21, Yonsei University, Seoul 120-749, Republic of Korea