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Simulating Titan's upper atmosphere and its photochemistry in the vacuum ultra-violet (VUV)

Sarah Tigrine 1 Nathalie Carrasco 1 Ludovic Vettier 2 Laurent Nahon 3
1 PLANETO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
2 LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
3 SSOLEIL - Synchrotron SOLEIL
Abstract : Titan, the largest moon of Saturn, has a dense atmosphere whose upper layers are mainly composed of methane (CH4) and molecular nitrogen (N2). The Cassini mission revealed that the interaction between those molecules and the solar VUV radiation, as well as the electrons from Saturn’s magnetosphere, leads to a complex chemistry above an altitude of 800km. Cassini instruments such as INMS or CAPS revealed that this naturally ionized environment contains heavy organic molecules like benzene (C6H6) even at altitudes higher than 900 km
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Submitted on : Wednesday, August 5, 2015 - 5:04:01 PM
Last modification on : Monday, January 10, 2022 - 10:16:06 AM

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  • HAL Id : insu-01182951, version 1

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INSU | CNRS | UPMC | UVSQ | LATMOS | SYNCHROTRON-SOLEIL | SORBONNE-UNIVERSITE | SU-SCIENCES | GS-ENGINEERING | INSTITUT-SCIENCES-LUMIERE

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Sarah Tigrine, Nathalie Carrasco, Ludovic Vettier, Laurent Nahon. Simulating Titan's upper atmosphere and its photochemistry in the vacuum ultra-violet (VUV). Astrobiology Science Conference 2015 (AbSciCon 2015 ): Habitability, Habitable Worlds, and Life, USRA Houston, Jun 2015, Chicago, United States. 7338.pdf. ⟨insu-01182951⟩

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