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Photophoresis boosts giant planet formation
2013
Astronomy and Astrophysics
In the core accretion model of giant planet formation, a solid protoplanetary core begins to accrete gas directly from the nebula when its mass reaches about 5 earth masses. The protoplanet has at most a few million years to reach runaway gas accretion, as young stars lose their gas disks after 10 million years at the latest. Yet gas accretion also brings small dust grains entrained in the gas into the planetary atmosphere. Dust accretion creates an optically thick protoplanetary atmosphere
doi:10.1051/0004-6361/201321582
fatcat:l3eucuytbbdkjczlbft4xzl5aq