Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21536707j&link_type=abstract
American Astronomical Society, AAS Meeting #215, #367.07; Bulletin of the American Astronomical Society, Vol. 42, p.557
Astronomy and Astrophysics
Astronomy
Scientific paper
Growing planets embedded in gas-rich optically thick protoplanetary disks can clear annular gaps if they are sufficiently massive. The threshold mass is usually considered to be about Jupiter's mass, but less massive planets can begin to clear partial gaps in disks. I will examine the consequences of partial and full gaps being opened in protoplanetary disks, both in terms of environmental effects on the planet's growth and migration and in terms of observability. The disk models will take into account radiative feedback on the temperature and density structure of the disk. Shadowing and illumination on the gap alters the radial temperature profile of the disk, which can alter the balance of Type I migration torques and the sublimation of volatiles in the vicinity of the planet. Direct detection of these gaps may be possible with high-resolution imaging across a wide range of wavelengths, from the optical to the radio. The width and depth of these gaps correlate to the planet mass. Detection of a growing sub-Jovian planet embryo in a protoplanetary disk will constrain timescales on giant planet formation.
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