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Temporal evolution of the high-energy irradiation and water content of TRAPPIST-1 exoplanets
V. Bourrier, J. de Wit, E. Bolmont +13
The ultracool dwarf star TRAPPIST-1 hosts seven Earth-size transiting planets, some of which could harbour liquid water on their surfaces. UV observations are essential to measure…
Modelling climate diversity, tidal dynamics and the fate of volatiles on TRAPPIST-1 planets
Martin Turbet, Emeline Bolmont, Jeremy Leconte +6
TRAPPIST-1 planets are invaluable for the study of comparative planetary science outside our Solar System and possibly habitability. First, we derive from N-body simulations possib…
The ARIEL Mission Reference Sample
Tiziano Zingales, Giovanna Tinetti, Ignazio Pillitteri +3
The ARIEL (Atmospheric Remote-sensing Exoplanet Large-survey) mission concept is one of the three M4 mission candidates selected by the European Space Agency (ESA) for a Phase A st…
Thermochemistry and vertical mixing in the tropospheres of Uranus and Neptune: How convection inhibition can affect the derivation of deep oxygen abundances
Thibault Cavalié, Olivia Venot, Franck Selsis +3
Thermochemical models have been used in the past to constrain the deep oxygen abundance in the gas and ice giant planets from tropospheric CO spectroscopic measurements. Knowing th…
Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1
Michael Gillon, Amaury H. M. J. Triaud, Brice-Olivier Demory +27
One focus of modern astronomy is to detect temperate terrestrial exoplanets well-suited for atmospheric characterisation. A milestone was recently achieved with the detection of th…
CO2 condensation is a serious limit to the deglaciation of Earth-like planets
Martin Turbet, Francois Forget, Jeremy Leconte +2
It is widely believed that the carbonate-silicate cycle is the main agent to trigger deglaciations by CO greenhouse warming on Earth and on Earth-like planets when they get in…