Do we understand Wolf-Rayet stars?

Wolf-Rainer Hamann, Götz Gräfener, Lida Oskinova and Adriane Liermann

Universität Potsdam, Institut für Physik, Astrophysik

The spectra of Wolf-Rayet stars can be reproduced by line-blanketed model atmospheres. WR winds are strongly inhomogeneous; one means to study wind clumping is provided by the X-ray line profiles. First hydrodynamically consistent WR wind models now exist for some WR subtypes. The new evolutionary models for massive stars which account for rotation can still not reproduce well the Galactic WR population.

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