Influence of different parameters on the chemical composition of warm neptunes

O. Venot 1, 2, 3 M. Agúndez Franck Selsis 2, 3, 4, 1 Marcell Tessenyi Leen Decin
1 ECLIPSE 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 : We developed a 1D photo-thermochemical model to study the atmosphere of warm exoplanets. The chemical scheme used in this model is completely new in planetology and has been constructed in collaboration with specialists of combustion. It has been validated as a whole through experiments on a large range of temperature (300 - 2500 K) and pressure (1 mbar - 100 bar), allowing to study a wide variety of exoplanets. We have used this chemical model to study the atmosphere of two warm Neptunes, GJ3470b and GJ436b, and the influence of different parameters (vertical mixing, metallicity, temperature, . . . ) on their chemical composition. We present here the results obtained in these studies.
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O. Venot, M. Agúndez, Franck Selsis, Marcell Tessenyi, Leen Decin. Influence of different parameters on the chemical composition of warm neptunes. SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics. Eds.: J. Ballet, F. Martins, F. Bournaud, R. Monier, C. Reylé, pp.77-81held 03-06-june 2014, 2014, Paris, France. ⟨hal-01092280⟩



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