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 2010/07
形態種別 研究論文
査読 査読あり
標題 Herschel/HIFI observations of Mars: First detection of O2 at submillimetre wavelengths and upper limits on HCl and H2O2
執筆形態 その他
掲載誌名 Astronomy & Astrophysics
出版社・発行元 EDP SCIENCES S A
巻・号・頁 518,pp.L49
著者・共著者 Hartogh, P,al,incl,Sagawa
概要 We report on an initial analysis of Herschel/HIFI observations of hydrogen chloride (HCl), hydrogen peroxide (H2O2), and molecular oxygen (O-2) in the Martian atmosphere performed on 13 and 16 April 2010 (L-s similar to 77 degrees). We derived a constant volume mixing ratio of 1400 +/- 120 ppm for O-2 and determined upper limits of 200 ppt for HCl and 2 ppb for H2O2. Radiative transfer model calculations indicate that the vertical profile of O-2 may not be constant. Photochemical models determine the lowest values of H2O2 to be around L-s similar to 75 degrees but overestimate the volume mixing ratio compared to our measurements.
DOI 10.1051/0004-6361/201015160
ISSN 0004-6361