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Orbital migration models under test

Published online by Cambridge University Press:  10 November 2011

Wilhelm Kley
Wilhelm Kley*
Affiliation:
Institut für Astronomie & Astrophysik, Universität Tübingen, Morgenstelle 10, 72076 Tübingen, Germany email: [email protected]
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Abstract

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Planet-disk interaction predicts a change in the orbital elements of an embedded planet. Through linear and fully hydrodynamical studies it has been found that migration is typically directed inwards. Hence, this migration process gives natural explanation for the presence of the ’hot’ planets orbiting close to the parent star, and it plays a mayor role in explaining the formation of resonant planetary systems.

However, standard migration models for locally isothermal disks indicate a too rapid inward migration for small mass planets, and a large number of massive planets are found very far away from the star. Recent studies, including more complete disk physics, have opened up new paths to slow down or even reverse migration. The new findings on migration are discussed and connected to the observational properties of planetary systems.

Keywords

planetary systems: formationaccretion diskshydrodynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S276: The Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution , October 2010 , pp. 271 - 278
Copyright
Copyright © International Astronomical Union 2011

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