Disks, Extrasolar Planets and Migration

Details Disks, Extrasolar Planets and Migration Disks, Extrasolar Planets and Migration

1999-05-18

arxiv.org/abs/astro-ph/9905229v1

Astronomy and Astrophysics

Astrophysics

22 pages (including 3 figures), LaTeX, uses kluwer.cls, to be published in 'From Dust to Terrestrial Planets', eds W. Benz, R.

Scientific paper

We review results about protoplanetary disk models, protoplanet migration and formation of giant planets with migrating cores. We first model the protoplanetary nebula as an \alpha-accretion disk and present steady state calculations for different values of \alpha and gas accretion rate through the disk. We then review the current theories of protoplanet migration in the context of these models, focusing on the gaseous disk-protoplanet tidal interaction. According to these theories, the migration timescale may be shorter than the planetary formation timescale. Therefore we investigate planet formation in the context of a migrating core, considering both the growth of the core and the build-up of the envelope in the course of the migration.

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