2004/01/09 by S. A. Sim · 12 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Branching (polymer chemistry) #Equivalent width #Line (geometry) #Monte Carlo method #O-type star #Radiative transfer #Scattering #Stars #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2004.07562.x
published in Monthly Notices of the Royal Astronomical Society 349(3), 899-908 (Oxford University Press) · 12 pages, 7 figures. Accepted for publication by MNRAS
arxiv created 2004/01/09 · openalex publication_date 2004/04/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The effect of photon frequency redistribution by line branching on mass-loss rates for hot luminous stars is investigated. Monte Carlo simulations are carried out for a range of OB star models which show that previous mass-loss calculations which neglect non-resonance line scattering overestimate mass-loss rates for luminous O stars by ∼20 per cent. For luminous B stars the effect is somewhat larger, typically ∼50 per cent. A Wolf–Rayet star model is used to investigate line branching in the strong wind limit. In this case the effect of line branching is much greater, giving mass-loss rates that are smaller by a factor ∼3 from computations which neglect branching.