Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dda....39.0303b&link_type=abstract
American Astronomical Society, DDA meeting #39, #3.03
Astronomy and Astrophysics
Astronomy
Scientific paper
A planet embedded in a protoplanetary gaseous disk experiences a torque from the disk which generally leads to its orbital decay toward the central object. This process, known as planetary migration, plays a major role in the formation of planetary systems. In order to elaborate predictive scenarios, it is of primary interest to have accurate estimates of the migration timescale. Many recent works on planet-disk interaction have challenged to include more physical ingredients, but very few of them considered the disk self-gravity. In this communication, I will present the impact of the disk self-gravity on the migration rate by means of two-dimensional hydrodynamic simulations. Namely I will show that the customary practice in planet-disk simulations to consider a planet freely migrating in a disk without self-gravity induces a spurious shift of Lindblad resonances, which can lead to a significant overestimate of the torque. I will also describe additional inertial issues when a circumplanetary disk builds up around the planet.
Baruteau Clément
Masset Frédéric
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