Séminaire IPAG

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Accreting planets and observational consequences

jeudi 22 septembre 2022 - 11h00

Matias Montesinos - Escuela de Ciencias, Universidad Viña del Mar & Núcleo Milenio de formación planetaria (NPF), Chile
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Protoplanetary disks are disks of gas and dust rotating around young stars, supposedly the place where planets form. Unfortunately, it has been very difficult to catch this planet formation process by direct imaging. While the planet formation process is still under debate, one of the most accepted mechanisms is gas accretion onto rocky cores. The rocky core grows through gas accretion from the disk, forming a large envelope around the nucleus. At some point, the self-gravity of the envelope triggers a fast accretion phase, resulting in a formed giant planet. Such a process is expected to leave specific imprints in the protoplanetary disk that could be identified in scattered and continuum images or CO line observations. In this talk, I will discuss the physics of accreting planets through 3D numerical hydro-simulations pointing out some particular signatures if specific ingredients such as radiative feedback of accreting planets or radiation pressure terms are included in the growing process.

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Hôtes : Nicolas Cuello

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