The evolution of infalling sulfur species in Titan's atmosphere

K. M., Hickson 1 J. C., Loison 1 T. Cavalié 2, 3, 4, 5 Eric Hébrard 2, 3, 4, 5 M. Dobrijevic 2, 3, 4, 5
2 ASP 2014
L3AB - Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux, OASU - Observatoire aquitain des sciences de l'univers, LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac], Université Sciences et Technologies - Bordeaux 1
Abstract : Aims: We studied the hypothesis that micrometeorites and Enceladus' plume activity could carry sulfur-bearing species into the upper atmosphere of Titan, in a manner similar to oxygen-bearing species. Methods: We have developed a detailed photochemical model of sulfur compounds in the atmosphere of Titan that couples hydrocarbon, nitrogen, oxygen, and sulfur chemistries. Results: Photochemical processes produce mainly CS and H2CS in the upper atmosphere of Titan and C3S, H2S and CH3SH in the lower atmosphere. Mole fractions of these compounds depend significantly on the source of sulfur species. Conclusions: A possible future detection of CS (or the determination of a low upper limit) could be used to distinguish the two scenarios for the origin of sulfur species, which then could help to differentiate the various scenarios for the origin of H2O, CO, and CO2 in the stratosphere of Titan.
Type de document :
Article dans une revue
Astronomy and Astrophysics - A&A, EDP Sciences, 2014, 572, pp.A58. 〈10.1051/0004-6361/201424703〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01090772
Contributeur : Marie-Paule Pomies <>
Soumis le : jeudi 4 décembre 2014 - 10:53:14
Dernière modification le : samedi 5 décembre 2015 - 01:51:46

Identifiants

Collections

Citation

K. M., Hickson, J. C., Loison, T. Cavalié, Eric Hébrard, M. Dobrijevic. The evolution of infalling sulfur species in Titan's atmosphere. Astronomy and Astrophysics - A&A, EDP Sciences, 2014, 572, pp.A58. 〈10.1051/0004-6361/201424703〉. 〈hal-01090772〉

Partager

Métriques

Consultations de la notice

70