Colloquia
ARI Institute ColloquiumTeeseminar: Working Group-Meeting on Experimental Stellar Dynamics
X-Astro Group Meeting on Extragalactic Astronomy
Heidelberg Joint Astronomical Colloquium
Physics Colloquium
MPIA Visitors' Seminar
Further Colloquia of the Faculty
09.02.2012 11:15h
Special Colloquium
Seminar room of the ARI
Farzana Meru ETH Zurich
The rapid inward migration of fragments formed by gravitational instability
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.
19.04.2012 11:15h
ARI Institute Colloquium
Seminar room of the ARI
tbd
26.04.2012 11:15h
ARI Institute Colloquium
Seminar room of the ARI
tbd
03.05.2012 11:15h
ARI Institute Colloquium
Seminar room of the ARI
tbd
Contact: S. Matyssek
