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Herschel/HIFI对火星的观测：首次在亚毫米波长探测O_2和HCl和H_2O_2的上限

Herschel/HIFI observations of Mars: first detection of O_2 at submillimetre wavelengths and upper limits on HCl and H_2O_2

P. Hartogh, C. Jarchow, E. Lellouch, M. de Val-Borro, M. Rengel, R. Moreno, A. S. Medvedev, H. Sagawa, B. M. Swinyard, T. Cavalié, D. C. Lis, M. I. Błęcka, M. B… 展开作者

P. Hartogh, C. Jarchow, E. Lellouch, M. de Val-Borro, M. Rengel, R. Moreno, A. S. Medvedev, H. Sagawa, B. M. Swinyard, T. Cavalié, D. C. Lis, M. I. Błęcka, M. Banaszkiewicz, D. Bockelée-Morvan, J. Crovisier, T. Encrenaz, M. Küppers, L. -M. Lara, S. Szutowicz, B. Vandenbussche, F. Bensch, E. A. Bergin, F. Billebaud, N. Biver, G. A. Blake, J. A. D. L. Blommaert, J. Cernicharo, L. Decin, P. Encrenaz, H. Feuchtgruber, T. Fulton, T. de Graauw, E. Jehin, M. Kidger, R. Lorente, D. A. Naylor, G. Portyankina, M. Sánchez-Portal, R. Schieder, S. Sidher, N. Thomas, E. Verdugo, C. Waelkens, N. Whyborn, D. Teyssier, F. Helmich, P. Roelfsema, J. Stutzki, H. G. LeDuc, J. A. Stern

备注：
Accepted for publication in Astronomy and Astrophysics (special issue on HIFI first results); minor changes to match published version
发表信息：
Astron.Astrophys. 521 (2010) L49
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摘要：

我们报告了2010年4月13日和16日在火星大气中进行的Herschel/HIFI氯化氢（HCl），过氧化氢（H_2O_2）和分子氧（O_2）观测的初步分析（L_s ~ 77°）。我们推导出O_2的定容混合比为1400 +/- 120 ppm，HCl的上限为200 ppt，H_2O_2的上限为2 ppb。辐射转移模式计算表明，O_2的垂直廓线可能不是恒定的。光化学模型确定H_2O_2的最低值在L_s ~ 75°附近，但与我们的测量相比高估了体积混合比。

英文摘要：

We report on an initial analysis of Herschel/HIFI observations of hydrogen chloride (HCl), hydrogen peroxide (H_2O_2), and molecular oxygen (O_2) in the Martian atmosphere performed on 13 and 16 April 2010 (L_s ~ 77°). 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 H_2O_2. Radiative transfer model calculations indicate that the vertical profile of O_2 may not be constant. Photochemical models determine the lowest values of H_2O_2 to be around L_s ~ 75° but overestimate the volume mixing ratio compared to our measurements.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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