Nested-grid calculations of disk-planet interaction
Gennaro D'Angelo, Thomas Henning & Wilhelm Kley
submitted to A&A
We study the evolution of embedded protoplanets in a protostellar
disk using very high resolution nested-grid computations.
This method allows us to perform global simulations of planets
orbiting in disks and, at the same time, to resolve in detail
the dynamics of the flow inside the Roche lobe of the planet.
The primary interest of this work lies in the analysis of the
gravitational torque balance acting on the planet. For this purpose
we study planets of different masses, ranging from one Earth-mass up to
one Jupiter-mass, assuming typical parameters of the protostellar
disk. The high resolution of the method allows a precise determination
of the mass flow onto the planet and the resulting torques.
The obtained migration time scales are in the range from few times
$10^4$ years, for intermediate mass planets, to $10^6$ years, for
very low and high mass planets.
Typical growth time scales depend strongly on the planetary mass,
ranging from a few hundred years, in the case of Earth-type planets,
to several ten thousand years, in the case of Jupiter-type planets.
Version: Jan. 20th, 2002
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