Radiative transfer of the oxygen 130nm triplet through the atmosphere of Mars and Venus - INSU - Institut national des sciences de l'Univers Access content directly
Conference Papers Year : 2007

Radiative transfer of the oxygen 130nm triplet through the atmosphere of Mars and Venus

Abstract

The problem of the oxygen emission in the planetary atmospheres is crucial to constraint the atmospheric models. The oxygen 130nm triplet is optically thick in those atmospheres and is resonant with sun radiations. The instruments SPICAV and SPICAM are able to measure the intensity of this triplet without any spectral resolution. The Hubble space telescope with the STIS instrument is able to get enough spectral resolution to see the lines profile In previous simulations, the overlapping between this triplet and lines of the CO fourth positive band has never been taken into account.We present new simulations calculating the oxygen 130nm triplet intensity and line profile taking into account the overlapping problem with a partial redistribution. Due to the structure of the triplet, we had to develop a new expression of the RII redistribution function. The effects of the CO lines enlarge strongly the 130nm lines and consequently modified the total intensity of the triplet.
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Dates and versions

insu-00366243 , version 1 (06-03-2009)

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  • HAL Id : insu-00366243 , version 1

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Mathieu Barthelemy, Guillaume Gronoff, Jean Lilensten, Jean-Yves Chaufray. Radiative transfer of the oxygen 130nm triplet through the atmosphere of Mars and Venus. European Planetary Science Congress 2007, Aug 2007, Potsdam, Germany. ⟨insu-00366243⟩
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