Venot, Olivia Hébrard, Eric Agúndez, Marcelino Dobrijevic, Michel Selsis, Franck Hersant, Franck Bounaceur, Roda Bénilan, Yves Marie-Claire, Gazeau Fray, Nicolas Iro, Nicolas
European Planetary Science Congress edition:7 location:Madrid, Spain date:23-28 September 2012
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.