The Co-orbital Corotation Torque and Its Effect on Planet Migration

Details The Co-orbital Corotation Torque and Its Effect on Planet Migration The Co-orbital Corotation Torque and Its Effect on Planet Migration

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dda....39.0301m&link_type=abstract

American Astronomical Society, DDA meeting #39, #3.01

Astronomy and Astrophysics

Astronomy

Scientific paper

A planet embedded in a gaseous protoplanetary disk is subject to a tidal torque from the disk. When the orbit is circular, the co-orbital corotation torque corresponds to the torque arising from the material of the coorbital region. I will present the dynamics of this region, and I will present situations in which the co-orbital corotation torque plays a major role for planetary migration. Namely I will show how this torque can halt the migration of low-mass planets at the edge of a cavity, then I will turn to the case of sub-giant planets embedded in massive disks, for which migration can undergo a runaway. Finally, I will present some recent results about the properties of the co-orbital corotation torque in a radiatively inefficient disk, and I will show how the latter can halt or revert type I migration.

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