¹ Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan
² Physics Department, Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama 790-8577, Japan
³ California Institute of Technology, MC 105-24, 1200 East California Boulevard, Pasadena, CA 91125
⁴ Visiting Astronomer, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822
⁵ Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218
⁶ Service d'Astrophysique, CEA/Saclay, 91191 Gif-sur-Yvette, France
⁷ Institute for Astronomy, 2680 Woodlawn Drive, University of Hawaii, Honolulu, HI 96822
⁸ National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
⁹ Subaru Telescope, National Astronomical Observatory, 650 North A`ohoku Place, Hilo, HI 96720
¹⁰ Department of Astronomy, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
¹¹ Department of Astronomy, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
¹² INAF—Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy
¹³ European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany
¹⁴ Laboratoire d'Astrophysique de Marseille, BP 8, Traverse du Siphon, 13376 Marseille Cedex 12, France
¹⁵ Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721
¹⁶ Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138
¹⁷ Department of Physics, Swiss Federal Institute of Technology (ETH-Zurich), CH-8093 Zurich, Switzerland
¹⁸ Department of Physics and Astronomy, University of California, Los Angeles, CA 90095
¹⁹ Max Planck Institut für Astronomie, Königstuhl 17, Heidelberg D-69117, Germany
²⁰ Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125