Stellar Parameters of Wolf-Rayet Stars from Far-UV to Mid-IR Observations

Details Stellar Parameters of Wolf-Rayet Stars from Far-UV to Mid-IR Observations Stellar Parameters of Wolf-Rayet Stars from Far-UV to Mid-IR Observations

2002-07-26

arxiv.org/abs/astro-ph/0207574v1

Astronomy and Astrophysics

Astrophysics

7 pages, 1 figure, uses IAUS212.sty, to appear in Proc. IAU Symp 212, "A Massive Star Odyssey, from Main Sequence to Supernova

Scientific paper

Recent results for Galactic and Magellanic Cloud Wolf-Rayet stars are summarised based on line blanketed, clumped model atmospheres together with UV, optical and IR spectroscopy. The trend towards earlier WN and WC spectral types with decreasing metallicity is explained via the sensitivity of classification diagnostics to abundance/wind density, such that WR mass-loss rates are metallicity dependent. Pre-supernovae masses for WC stars are determined, in reasonable agreement with CO-cores of recent Type-Ic SN.

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