Project 2.2: The density of exoplanets
Project 2.2 is led by François Bouchy. The aim of the project is to fill the mass-radius diagram in the low-mass exoplanet regime, to constrain their internal structure and composition, and to provide “golden” targets for atmospheric characterisation. To date only a few dozen low-mass exoplanets (Neptune-like and super-Earths) have masses and radii sufficiently accurately measured to constrain their composition and internal structure. The transition in mass or radius between purely rocky planets and planets with massive volatile envelopes is not well established. The main objective is to find transiting planets that orbit nearby stars with a special focus on small stars, namely K and M dwarfs. This will be achieved with the high precision photometric survey NGTS, in operation at Paranal, and the TESS space mission, launched in 2018. Both experiments will discover small-sized exoplanets and will permit us to derive planetary radii, which will be complementary to future CHEOPS observations. Both NGST and TESS aim to monitor bright K and M dwarf stars over the whole sky and will require ground-based radial-velocity follow-up to measure exoplanet masses. NIRPS (Near-InfraRed (IR) Planet Search) is an in-development near-IR echelle spectrograph led by UGE and Montréal University. NIRPS will be installed on the 3.6-m ESO telescope at La Silla end 2019 and will be used simultaneously with the well-known planet hunter HARPS. Both instruments will play a crucial role in the NGTS, TESS, and CHEOPS follow-up and will permit us to derive exoplanet masses down to one Earth mass. They will also allow us to characterise properties and chemical abundances of host stars to constrain the metallic core size and mantle composition of exoplanets.
The dataset linked to the papers (if any) can be downloaded through the ADS website after each paper - symbol
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Transiting exoplanets from the CoRoT space mission. XXIX. The hot Jupiters CoRoT-30 b and CoRoT-31 b
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TOI-481 b and TOI-892 b: Two Long-period Hot Jupiters from the Transiting Exoplanet Survey Satellite
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Warm Jupiters in TESS Full-frame Images: A Catalog and Observed Eccentricity Distribution for Year 1
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