2005/09/23 by S. Fromang, Sebastien Fromang, Richard P. Nelson +1
Chemistry · Physics and Astronomy · #Astro and Planetary Science #Astrophysics and Star Formation Studies #Molecular Spectroscopy and Structure #astro-ph
paper · pdf · doi:10.1111/j.1745-3933.2005.00109.x
published as Mon.Not.Roy.Astron.Soc.Lett.364:L81-L85,2005 · 5 pages, 4 figures, accepted in MNRAS. A version with full resolution, colour figures is available at http://www.maths.qmul.ac.uk/~rpn/preprints/
arxiv created 2005/09/23 · openalex publication_date 2005/10/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
We study the migration of solid bodies in turbulent protoplanetary accretion discs by means of global magnetohydrodynamic simulations. The bodies range in size from 5 cm up to 1 m, and so include objects whose migration is expected to be the most rapid due to gas drag interaction with the disc. As they drift inward through the disc, some of them are trapped in regions where gas pressure maxima are created by long-lived anticyclonic vortices. This accumulation is very efficient, locally increasing the dust-to-gas ratio by a factor >100 in some cases. We discuss the possible implications of this result for theories of planet formation.