Astrochemistry

Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. III. Changing ionisation and the emergence of an ionosphere
Context. Ultra-hot Jupiters are the hottest exoplanets that have been discovered so far. They present a unique possibility to explore …
Ch. Helling, M. Worters, D. Samra, K. Molaverdikhani, N. Iro
Posted Apr 1, 2021
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Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. III. Changing ionisation and the emergence of an ionosphere
Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. II. Mapping the effects of gas kinetics
Aims: The atmospheres of ultra-hot Jupiters (UHJs) are commonly considered to be at thermochemical equilibrium. We aim to provide …
K. Molaverdikhani, Ch. Helling, B.~W.~P. Lew, R.~J. MacDonald, D. Samra, N. Iro, P. Woitke, V. Parmentier
Posted Mar 1, 2020
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Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. II. Mapping the effects of gas kinetics
Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. I. Cloud and chemistry mapping
Context. Of the presently known ensuremath≈3900 exoplanets, sparse spectral observations are available for ensuremath≈100. Ultra-hot …
Ch. Helling, N. Iro, L. Corrales, D. Samra, K. Ohno, M.~K. Alam, M. Steinrueck, B. Lew, K. Molaverdikhani, R.~J. MacDonald, O. Herbort, P. Woitke, V. Parmentier
Posted Nov 1, 2019
PDF Cite DOI arXiv
Understanding the atmospheric properties and chemical composition of the ultra-hot Jupiter HAT-P-7b. I. Cloud and chemistry mapping
The atmospheric chemistry of the warm Neptune GJ 3470b: Influence of metallicity and temperature on the CH$_4$/CO ratio
Context. Current observation techniques are able to probe the atmosphere of some giant exoplanets and get some clues about their …
Olivia Venot, Marcelino Agúndez, Franck Selsis, Marcell Tessenyi, Nicolas Iro
Posted Feb 1, 2014
Cite DOI arXiv
The impact of atmospheric circulation on the chemistry of the hot Jupiter HD 209458b
We investigate the effects of atmospheric circulation on the chemistry of the hot Jupiter HD 209458b. We use a simplified dynamical …
M. Agúndez, O. Venot, N. Iro, F. Selsis, F. Hersant, E. Hébrard, M. Dobrijevic
Posted Dec 1, 2012
Cite DOI arXiv
A chemical model for the atmosphere of hot Jupiters
Context. The atmosphere of hot Jupiters can be probed by primary transit and secondary eclipse spectroscopy. Owing to the intense UV …
O. Venot, E. Hébrard, M. Agúndez, M. Dobrijevic, F. Selsis, F. Hersant, N. Iro, R. Bounaceur
Posted Oct 1, 2012
Cite DOI arXiv