Séminaire IPAG

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Demystifying substellar origins with Direct Detection

jeudi 9 octobre 2025 - 11h00

Gayathri Viswanath - IPAG
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The last three decades have seen increasing number of exoplanets being discovered in diverse environments, displaying vastly different properties. With interesting statistical trends that are emerging from such planet demographics, the community is at the wake of a rigorous revision of its current understanding of how planets form and evolve. To form accurate theories, however, they need to be based on a planet population that spans the complete range of parameter space with respect to both planet and host star properties. A powerful tool that aids in this goal is the technique of direct detection that targets young, sub-stellar companions in wide orbits around their host stars. In this talk, I will cover my PhD thesis work which utilised the techniques of high-contrast imaging and high-resolution spectroscopy to detect and characterise sub-stellar objects that have either recently formed or are in the process of formation, and discuss how such observations aid in constraining formation models of planets and brown dwarfs.

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Hôtes : Mickael Bonnefoy

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