The metallicity dependence of WR wind models

Details The metallicity dependence of WR wind models The metallicity dependence of WR wind models

2005-11-07

arxiv.org/abs/astro-ph/0511174v1

Astronomy and Astrophysics

Astrophysics

12 pages, 6 figures. Invited Review in Tartu workshop (Aug 2005). Proc "Stellar Evolution at Low Metallicity: Mass-Loss, Explo

Scientific paper

With the advance of stellar atmosphere modelling during the last few years, large progress in the understanding of Wolf-Rayet (WR) mass loss has been achieved. In the present paper we review the most recent developments, including our own results from hydrodynamic non-LTE model atmospheres. In particular, we address the important question of the Z-dependence of WR mass loss. We demonstrate that models for radiatively driven winds imply a rather strong dependence on Z. Moreover, we point out the key role of the L/M-ratio for WR-type mass loss.

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