192 citations · 1k across the 33 of their papers we have counts for
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astro-ph.EP2015★ 15 cited
Turbulent Thermal Diffusion: A Way to Concentrate Dust in Protoplanetary Discs
Alexander Hubbard
Turbulence acting on mixes of gas and particles generally evenly diffuses the latter through the former. However, in the presence of background gas temperature gradients a phenomen…
astro-ph.EP2015
Photophoresis in a Dilute, Optically Thick Medium and Dust Motion in Protoplanetary Disks
Colin P. McNally, Alexander Hubbard
We derive expressions for the photophoretic force on opaque spherical particles in a dilute gas in the optically thick regime where the radiation field is in local thermal equilibr…
astro-ph.EP2015★ 17 cited
Compound Chondrules fused Cold
Alexander Hubbard
About 4-5% of chondrules are compound: two separate chondrules stuck together. This is commonly believed to be the result of the two component chondrules having collided shortly af…