Séminaire IPAG

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The effects of binary companions on planet formation and evolution

jeudi 26 janvier 2023 - 11h00

Clémence Fontanive - Université de Montréal
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While numerous exoplanets have now been uncovered in stellar binaries, the impact of companion stars on planet formation and evolution is still not understood. In this talk, I will present results of population trends seen among the known sample of planets in multiple star systems, which allows us to investigate the effects of stellar binarity on the resulting planetary architectures. In particular, observations of stars hosting high-mass close-in giant planets find an excess of binary companions on few hundred AU separations, suggesting that such systems may provide favourable conditions for the formation of the observed inner companions. I will also show results from simulations of circumstellar disks adapted to binary star environments, which indicate that certain binary configurations may help trigger the formation of giant planets.

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Hôtes : Philippe Delorme

Salle Manuel Forestini, 414 rue de la piscine, 38400 Saint Martin d'Hères