Title: Photo-thermo-chemistry of hot atmospheres
Authors: Venot, Olivia
Hébrard, Eric
Agúndez, Marcelino
Dobrijevic, Michel
Selsis, Franck
Hersant, Franck
Bounaceur, Roda
Bénilan, Yves
Marie-Claire, Gazeau
Fray, Nicolas
Iro, Nicolas
Issue Date: Sep-2012
Host Document: vol:7
Conference: European Planetary Science Congress edition:7 location:Madrid, Spain date:23-28 September 2012
Article number: EPSC2012-223-2
Abstract: We have developed a new model to study the atmosphere of exoplanets adapted to the characteristics of the atmospheres of hot Jupiters and hot Neptunes. Such a model appears essential to interpret recent and future observations, to predict the composition and to understand the formation and the evolution of these planetary bodies. As the chemistry of nitrogen compounds is not well constrained, we investigated several sub-networks for nitrogen-bearing species and investigate their impact on the predicted abundances and spectra of HD 189733b. We present these results. An important problem of photochemicalmodels is the lack of high temperature photochemical data. In order to improve this situation, we have begun a campaign of measurement of VUV absorption cross section at high temperature for H2O, CO2 and NH3. We will present the influence of these new experimental data on the thermo-photochemicalmodel.
Publication status: published
KU Leuven publication type: IMa
Appears in Collections:Institute of Astronomy

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