The Astrophysical Journal, 690:L110–L113, 2009 January 10 doi:10.1088/0004-637X/690/2/L110 c 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A. DETECTION OF WATER ICE GRAINS ON THE SURFACE OF THE CIRCUMSTELLAR DISK AROUND HD 142527∗ M. Honda1,A.K.Inoue2, M. Fukagawa3,A.Oka4, T. Nakamoto4, M. Ishii5, H. Terada5, N. Takato5, H. Kawakita6, Y. K. Okamoto7, H. Shibai3, M. Tamura8,T.Kudo8, and Y. Itoh9 1 Department of Information Science, Kanagawa University, 2946 Tsuchiya, Hiratsuka, Kanagawa 259-1293, Japan;
[email protected] 2 College of General Education, Osaka Sangyo University, 3-1-1, Nakagaito, Daito, Osaka 574-8530, Japan 3 Department of Earth and Space Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan 4 Department of Earth and Planetary Science, Tokyo Institute of Technology, Ookayama, Meguro, Tokyo 152-8551, Japan 5 Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, HI 96720, USA 6 Department of Physics, Kyoto Sangyo University, Motoyama, Kamogamo, Kita-ku, Kyoto 603-8555, Japan 7 Institute of Astrophysics and Planetary Sciences, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan 8 National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan 9 Graduate School of Science, Kobe University, 1-1 Rokkodai, Kobe, Hyogo 657-8501, Japan Received 2008 July 31; accepted 2008 November 18; published 2008 December 19 ABSTRACT Coronagraphic imaging for the Herbig Ae star, HD 142527, was performed using the Coronagraphic Imager with Adaptive Optics (CIAO) on the 8.2 m Subaru Telescope.