Clathrate hydrate FTIR spectroscopy - infrared signatures, astrophysical significance
1 Institut d'Astrophysique Spatiale, UMR 8617, Université Paris-Sud, bât. 121, 91405 Orsay, France
2 Institut de Planétologie et d'Astrophysique de Grenoble, UMR 5274, Bâtiment D de Physique, BP 53, 38041 Grenoble Cedex 9, France
Clathrate hydrates, ice inclusion compounds, are of major importance for the Earth’s permafrost regions and may control the stability of gases in many astrophysical bodies such as the planets, comets and possibly interstellar grains. Their physical behavior may provide a trapping mechanism to modify the absolute and relative composition of icy bodies that could be the source of late-time injection of gaseous species in planetary atmospheres or hot cores. In this study, we provide and discuss laboratory-recorded infrared signatures of clathrate hydrates in the near to mid-infrared and the implications for space-based astrophysical tele-detection in order to constrain their possible presence.
© Owned by the authors, published by EDP Sciences, 2014
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