Is planetary migration inevitable?

Details Is planetary migration inevitable? Is planetary migration inevitable?

2003-09-05

arxiv.org/abs/astro-ph/0309175v1

Astronomy and Astrophysics

Astrophysics

8 pages, submitted for publication in 'Planetary Systems and Planets in Systems', eds. S. Udry, W. Benz and R. von Steiger (IS

Scientific paper

According to current theories, tidal interactions between a disk and an embedded planet may lead to the rapid migration of the protoplanet on a timescale shorter than the disk lifetime or estimated planetary formation timescales. Therefore, planets can form only if there is a mechanism to hold at least some of the cores back on their way in. Once a giant planet has assembled, there also has to be a mechanism to prevent it from migrating down to the disk center. This paper reviews the different mechanisms that have been proposed to stop or slow down migration.

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