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A non-grey analytical model for irradiated atmospheres. I: Derivation
Vivien Parmentier, Tristan Guillot
Context. Semi-grey atmospheric models (with one opacity for the visible and one opacity for the infrared) are useful to understand the global structure of irradiated atmospheres, t…
A non-grey analytical model for irradiated atmospheres. II: Analytical vs. numerical solutions
Vivien Parmentier, Tristan Guillot, Jonathan J. Fortney +1
The recent discovery and characterization of the diversity of the atmospheres of exoplanets and brown dwarfs calls for the development of fast and accurate analytical models. We qu…
Inference of Inhomogeneous Clouds in an Exoplanet Atmosphere
Brice-Olivier Demory, Julien de Wit, Nikole Lewis +11
We present new visible and infrared observations of the hot Jupiter Kepler-7b to determine its atmospheric properties. Our analysis allows us to 1) refine Kepler-7b's relatively la…
Bulk Composition of GJ 1214b and other sub-Neptune exoplanets
Diana Valencia, Tristan Guillot, Vivien Parmentier +1
GJ1214b stands out among the detected low-mass exoplanets, because it is, so far, the only one amenable to transmission spectroscopy. Up to date there is no consensus about the com…
3D mixing in hot Jupiter atmospheres. I. application to the day/night cold trap in HD 209458b
Vivien Parmentier, Adam P. Showman, Yuan Lian
Hot Jupiters exhibit atmospheric temperatures ranging from hundreds to thousands of Kelvin. Because of their large day-night temperature differences, condensable species that are s…