The Wolf-Rayet hydrogen puzzle -- an observational point of view

Details The Wolf-Rayet hydrogen puzzle -- an observational point of view The Wolf-Rayet hydrogen puzzle -- an observational point of view

2005-10-20

arxiv.org/abs/astro-ph/0510612v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, to appear in proc. of the Tartu Workshop, PASP, eds. Lamers, Langer, Nugis, Annuk

Scientific paper

Significant amounts of hydrogen were found in very hot early-type single WN
stars in the SMC and the LMC. Recently, we found similar evidence in the
Wolf-Rayet star of a short-period LMC binary. We discuss here the relevance of
hydrogen for WR star classification, models, the relation to metallicity, and
the GRB progenitors.

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