Upper limits for phosphine (PH3) in the atmosphere of Mars

被引：5

作者：

Olsen, K. S. ^{[1
]}

Trokhimovskiy, A. ^{[2
]}

Braude, A. S. ^{[3
]}

Korablev, O. I. ^{[2
]}

Fedorova, A. A. ^{[2
]}

Wilson, C. F. ^{[1
]}

Patel, M. R. ^{[4
]}

Irwin, P. G. J. ^{[1
]}

Montmessin, F. ^{[3
]}

Lefevre, F. ^{[3
]}

Baggio, L. ^{[3
]}

Alday, J. ^{[1
]}

Belyaev, D. A. ^{[2
]}

Patrakeev, A. ^{[2
]}

Shakun, A. ^{[2
]}

机构：

[1] Univ Oxford, Dept Phys, Oxford, England

[2] Space Res Inst IKI, Moscow, Russia

[3] Observat Spatiales LATMOS CNRS, Lab Atmospheres, Milieux, Paris, France

[4] Open Univ, Sch Phys Sci, Milton Keynes, Bucks, England

来源：

ASTRONOMY & ASTROPHYSICS | 2021年 / 649卷 / 649期

关键词：

planets and satellites: atmospheres; planets and satellites: composition; planets and satellites: terrestrial planets; planets and satellites: detection; METHANE; GAS; SOILS; ROCKS; WATER; SPECTROSCOPY; PHOSPHORUS; CHEMISTRY; METEORITE; JUPITER;

D O I：

10.1051/0004-6361/202140868

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Phosphine (PH3) is proposed to be a possible biomarker in planetary atmospheres and has been claimed to have been observed in the atmosphere of Venus, sparking interest in the habitability of Venus's atmosphere. Observations of another biomarker, methane (CH4), have been reported several times in the atmosphere of Mars, hinting at the possibility of a past or present biosphere. The Atmospheric Chemistry Suite on the ExoMars Trace Gas Orbiter has a spectral range that includes several absorption lines of PH3 with line strengths comparable to previously observed CH4 lines. The signature of PH3 was not observed in the 192 observations made over a full Martian year of observations, and here we report upper limits of 0.1-0.6 ppbv.

引用

页数：5

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