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

Abstract

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.

arXiv comment12 pages, 7 figures. Accepted for publication by MNRAS

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Cited by in corpus (9)

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• On the metallicity dependence of Wolf-Rayet winds
• The Missing Luminous Blue Variables and the Bistability Jump
• Hydrodynamic model atmospheres for WR stars: Self-consistent modeling of a WC star wind
• Monte Carlo Radiative Transfer
• The Impact of Accretion Disk Winds on the Optical Spectra of Cataclysmic Variables
• Mass fluxes for O stars
• Self-consistent modelling of line-driven hot-star winds with Monte Carlo radiation hydrodynamics
• Wolf-Rayet Mass-Loss Limits Due to Frequency Redistribution