Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 2H032

Accretion of Jupiter-mass Planets in the Limit of Vanishing Viscosity

Szulagyi, Judit (University of Nice-Sophia Antipolis, CNRS, Observatoire de la Cote d\'Azur, Laboratoire Lagrange, France)
Morbidelli, Alessandro (University of Nice-Sophia Antipolis, CNRS, Observatoire de la Cote d\'Azur, Laboratoire Lagrange, France)
Crida, Aurelien (University of Nice-Sophia Antipolis, CNRS, Observatoire de la Cote d\'Azur, Laboratoire Lagrange, France)
Masset, Frederic (Institute of Physical Sciences, Universidad Nacional Autonoma de Mexico, Mexico)

Abstract:
Motivation: the rate of gas accretion by the giant planets is crucial to understand their mass distribution. Too fast runaway accretion leads to too massive planets. Method: we investigated the characteristics of the circumplanetary disc (CPD) of a Jupiter-mass planet with a three-dimensional hydrodynamical nested grid code. We looked for the accretion mechanisms operating in inviscid (MRI inactive) CPD. Main results: 1) the main accretion mechanism from the CPD to the planet is the stellar tide 2) Jupiter\'s accretion rate could be >10x slower than previously thought 3) runaway growth could happen on a timescale comparable to the disc\'s lifetime

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