TY  - JOUR
A1  - Grassitelli, L.
A1  - Langer, N.
A1  - Sanyal, D.
A1  - Fossati, Luca
A1  - Bestenlehner, J. M.
T1  - Instabilities in the envelope of Wolf-Rayet stars
T2  - Wolf-Rayet Stars : Proceedings of an International Workshop held in Potsdam, Germany, 1.–5. June 2015
N2  - Wolf-Rayet stars are very hot stars close to the Eddington limit. In the conditions encountered in their radiation pressure dominated outer layers several instabilities are expected to arise. These instabilities could influence both the dynamic of their optically thick winds and the observed spectral lines introducing small and large scale variability. We investigate the conditions in the convective envelopes of our helium star models and relate them to the appearance of a high number of stochastic density inhomogeneities, i.e. clumping in the optically thick wind. We also investigate the pulsational stability of these envelope, considering the effect of the high stellar wind mass loss rates.
Y1  - 2015
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/8802
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:517-opus4-88024
SP  - 201
EP  - 204
ER  -