Mass-loss rates for hot luminous stars: the influence of line branching

Details Mass-loss rates for hot luminous stars: the influence of line branching Mass-loss rates for hot luminous stars: the influence of line branching

2004-01-09

arxiv.org/abs/astro-ph/0401149v1

Mon.Not.Roy.Astron.Soc. 349 (2004) 899

Astronomy and Astrophysics

Astrophysics

12 pages, 7 figures. Accepted for publication by MNRAS

Scientific paper

10.1111/j.1365-2966.2004.07562.x

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.

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