2011A&A...533A.131P


Query : 2011A&A...533A.131P

2011A&A...533A.131P - Astronomy and Astrophysics, volume 533A, 131-131 (2011/9-1)

Two phase, inward-then-outward migration of Jupiter and Saturn in the gaseous solar nebula.

PIERENS A. and RAYMOND S.N.

Abstract (from CDS):

It has recently been shown that the terrestrial planets and asteroid belt can be reproduced if the giant planets underwent an inward-then-outward migration (the ``Grand Tack''; Walsh and collaborators). Inward migration occurs when Jupiter opens a gap and type II migrates inward. The planets ``tack'' and migrate outward when Saturn reaches the gap-opening mass and is caught in the 3:2 resonance with Jupiter. The aim is to test the viability of the Grand Tack model and to study the dynamical evolution of Jupiter and Saturn during their growth from 10 M cores. We have performed numerical simulations using a grid-based hydrodynamical code. Most of our simulations assume an isothermal equation of state for the disk but a subset use a fully-radiative version of the code. For an isothermal disk the two phase migration of Jupiter and Saturn is very robust and independent of the mass-growth history of these planets provided the disk is cool enough. For a radiative disk we find some outcomes with two phase migrations and others with more complicated behavior. We construct a simple, 1D model of an evolving viscous disk to calculate the evolution of the disk's radiative properties: the disk transitions from radiative to isothermal from its outermost regions inward in time. We show that a two-phase migration is a natural outcome at late times even under the limiting assumption that isothermal conditions are required. Thus, our simulations provide strong support for the Grand Tack scenario.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - planets and satellites: formation - hydrodynamics - methods: numerical

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 45364 PM* 06 25 38.4744251424 -31 28 51.428476346   8.82 8.06     G8V 109 1
2 HD 128311 BY* 14 36 00.5607343227 +09 44 47.453643485 9.232 8.441 7.446 6.895 6.425 K3V 281 1

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2021.10.26-05:22:17

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