2016/08/29 by Mark Hutchison, Mark A. Hutchison, Guillaume Laibe +2 · 1 citation
Physics and Astronomy · #Astro and Planetary Science #Astrophysics #Astrophysics and Star Formation Studies #Atmospheric sciences #Grain size #Mechanics #Meteorology #Photoevaporation #Physics #Protoplanetary disk #Settling #Stars #Stellar, planetary, and galactic studies #Thermodynamics #Turbulence #Wind speed #astro-ph.EP #astro-ph.SR
paper · pdf · doi:10.1093/mnras/stw2191
11 pages, 9 figures, 1 table, 1 animation. Accepted for publication in MNRAS
arxiv created 2016/08/29 · openalex publication_date 2016/09/01 · arxiv updated 2016/09/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We model the behaviour of dust grains entrained by photoevaporation-driven winds from protoplanetary discs assuming a non-rotating, plane-parallel disc. We obtain an analytic expression for the maximum entrainable grain size in extreme-UV radiation-driven winds, which we demonstrate to be proportional to the mass-loss rate of the disc. When compared with our hydrodynamic simulations, the model reproduces almost all of the wind properties for the gas and dust. In typical turbulent discs, the entrained grain sizes in the wind are smaller than the theoretical maximum everywhere but the inner disc due to dust settling.