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Astrophysics Colloquium

Impact of Thermal Diffusion and Heat Release on the Orbital Evolution of Low-mass Protoplanets
Presented by Frederic Masset
National Autonomous University of Mexico

Thursday, March 8, 2018
11:00 A.M. in 169-336

Abstract
I will briefly review the basics of planet-disc tidal interactions with some emphasis on the dynamics of the corotation torque, which is a prominent ingredient in models of planetary population synthesis. I will then show how the introduction of thermal diffusion and heat release into the ambient disc by the accreting planet can have a strong impact on the time evolution of its orbital elements. One of the main conclusions is that sufficiently luminous planetary embryos may experience a growth of eccentricity and inclination to values comparable to the disc's aspect ratio, in sharp contrast with the conventional wisdom that the gaseous disc damps the eccentricity and inclination.

JPL Contact: Neal Turner (3-0049)


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