HR: 11:20h
AN: P32A-05 INVITED     [Abstracts]
TI: Gas Flow Near a Young Gas Giant Planet
AU: * Lubow, S
EM: lubow@stsci.edu
AF: STScI, 3700 San Martin Drive, baltimore, MD 21218 United States
AB: The mass acquired by a gas giant planet has long been believed to result from accretion of material within the surrounding gaseous disk (nebula). Bate, D'Angelo, and I have analyzed the properties and consequences of this flow by means of three-dimensional hydrodynamical simulations. Most of the accretion occurs after the planet has partially cleared a gap in the surrounding disk. The flow through the gap leads to accretion within the planet's Hill sphere. In that region, a circumplanetary disk forms which can serve as a site for satellite formation. The flow onto this disk is fully three-dimensional and involves shock production. The nebula exerts a torque on the planet that causes it to migrate radially. We have recently examined the torques produced by the material within the gap and within the Hill sphere.
DE: 5749 Origin and evolution
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting