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Increased insolation threshold for runaway greenhouse processes on Earth like planets
Jérémy Leconte, François Forget, Benjamin Charnay +2
Because the solar luminosity increases over geological timescales, Earth climate is expected to warm, increasing water evaporation which, in turn, enhances the atmospheric greenhou…
Possible climates on terrestrial exoplanets
Francois Forget, Jeremy Leconte
What kind of environment may exist on terrestrial planets around other stars? In spite of the lack of direct observations, it may not be premature to speculate on exoplanetary clim…
Exploring the faint young Sun problem and the possible climates of the Archean Earth with a 3-D GCM
Benjamin Charnay, François Forget, Robin Wordsworth +4
Different solutions have been proposed to solve the "faint young Sun problem", defined by the fact that the Earth was not fully frozen during the Archean despite the fainter Sun. M…
Elliptical instability in hot Jupiter systems
David Cébron, Michael Le Bars, Patrice Le Gal +3
Several studies have already considered the influence of tides on the evolution of systems composed of a star and a close-in companion to tentatively explain different observations…
Searching for Terrestrial Planets Orbiting in the Habitable Zone of Ultra-Cool Stars and Brown Dwarfs
Brice-Olivier Demory, Sara Seager, Jack Lissauer +11
We propose to use Kepler in 2-wheel mode to conduct a detailed search for Earth-sized planets orbiting ultra-cool stars and brown dwarfs (spectral types from M7 to L3). This popula…
The effect of rotation and tidal heating on the thermal lightcurves of Super Mercuries
F. Selsis, A. -S. Maurin, F. Hersant +4
Short period (<50 days) low-mass (<10Mearth) exoplanets are abundant and the few of them whose radius and mass have been measured already reveal a diversity in composition. Some of…