2016/04/07 by Daniel Carrera, Carrera, Daniel, Anders Johansen +4
Physics and Astronomy · #Astro and Planetary Science #Earth and Planetary Astrophysics (astro-ph.EP) #FOS: Physical sciences #Planetary Science and Exploration #Scientific Research and Discoveries #astro-ph.EP
paper · pdf · doi:10.48550/arxiv.1604.02186
Proceedings of colloquium "Twenty years of giant exoplanets" held at Observatoire de Haute Provence, France, October 5-9, 2015. Edited by I. Boisse, O. Demangeon, F. Bouchy & L. Arnold, p. 105-108. Published by the Observatoire de Haute-Provence, Institut Pythéas
arxiv created 2016/04/07 · openalex publication_date 2016/04/07 · arxiv updated 2016/04/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The size distribution of asteroids in the solar system suggests that they formed top-down, with 100-1000 km bodies forming from the gravitational collapse of dense clumps of small solid particles. We investigate the conditions under which solid particles can form dense clumps in a protoplanetary disc. We used a hydrodynamic code to model the solid-gas interaction in disc. We found that particles down to millimeter size can form dense clumps, but only in regions where solids make ∼ 8% of the local surface density. More generally, we mapped the range of particle sizes and concentrations that is consistent with the formation of particle clumps.