Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufm.p32a..06w&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #P32A-06
Physics
5744 Orbital And Rotational Dynamics, 5749 Origin And Evolution, 5759 Rings And Dust
Scientific paper
Planet migration due to disk torques from the corotation region (type III) is considered. There is a fast regime where the drift rate increases with the planet's mass and generally exceeds the type I migration rate, and a slow regime where the rate decreases with mass. The transition between these regimes or to type II motion is examined, and the range of validity of this migration mechanism explored. Type III migration depends on a sustained surface density deficit between material trapped in the corotation region and the ambient disk. Sufficient disk viscosity could suppress the motion by removing the deficit. Implications for the formation and survival of planets embedded in disks will be discussed.
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