サガワ ヒデオ   SAGAWA HIDEO
  佐川 英夫
   所属   京都産業大学  理学部 宇宙物理・気象学科
   職種   教授
言語種別 英語
発行・発表の年月 2008/09
形態種別 研究論文
査読 査読あり
標題 Imaging spectroscopy of the Venus 1.27 micron O2 airglow with ground-based telescopes
執筆形態 その他
掲載誌名 Advances in Space Research
出版社・発行元 ELSEVIER SCI LTD
巻・号・頁 41(9),pp.1375-1380
著者・共著者 Ohtsuki, S,Iwagami, N,Sagawa, H,Ueno, M,Kasaba, Y,Imamura, T,Nishihara, E
概要 Several ground-based observations of the Venus 1.27-mu m O-2 airglow were carried out from 2002 to 2005. Spectral image cubes were taken with the Okayama Astrophysical Observatory/infrared imaging spectrometer (superOASIS), the Gunma Astronomical Observatory/Cassegrain Near-Infrared Camera and NASA's Infrared Telescope Facility/cryogenic echelle spectrograph (CSHELL). The brightest airglow features were found at around the anti-solar point, which is in agreement with previous studies. We derived the rotational temperature distributions on the nightside hemisphere from observed airglow spectra. The temperature shows a weak positive correlation with the airglow intensity. The result indicates the bright region is heated chemically and/or dynamically, and supports the existing scenario for the Venus 02 airglow. That is, the airglow is excited by the descending oxygen transported from the dayside. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.
DOI 10.1016/j.asr.2007.10.014
ISSN 0273-1177