The metallicity dependence of WR wind models
G. Gräfener and W.-R. Hamann
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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