Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..459b&link_type=abstract
SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,
Astronomy and Astrophysics
Astrophysics
Accretion, Accretion Discs, Turbulence, Methods: Numerical, Planetary Systems: Formation, Planetary Systems: Protoplanetary Discs
Scientific paper
The observation of massive exoplanets at large orbital separation from their host star challenges theories of planetary formation. A possible formation mechanism involves the fragmentation of massive protoplanetary discs into clumps. While the conditions for fragmentation have been extensively investigated, little is known of the subsequent evolution of these giant planet embryos, in particular their expected orbital migration. We examine in this communication the interaction between a single planet and the gravitoturbulent disc it is embedded in, following the assumption that the planet has formed by gravitational instability. We show that such planets should rapidly migrate towards the inner parts of protoplanetary discs, regardless of the planet mass.
Baruteau Clément
Meru Farzana
Paardekooper Sijme-Jan
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