Institution: | Department of Astronomy, School of Science, University of Tokyo, Tokyo 113-0033, Japan;National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan;European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany;Astronomical Institute, Tohoku University, Aoba-ku, Sendai 980-8578, Japan |