Speaker
Georges Meynet
(Geneva Observatory)
Description
Massive stars with no or very little amount of metals are generally
considered as having very weak stellar winds. We reconsider here
this question through stellar models accounting for the effects of
axial rotation and show that rotating models of massive stars
might lose a significant fraction of their initial mass through mass loss.
The physical mechanisms triggering these mass losses and the chemical
composition of the stellar winds will be discussed. Consequences of these models for
nucleosynthesis and the nature of the GRB progenitors will be presented.
Author
Georges Meynet
(Geneva Observatory)
Co-authors
Prof.
André Maeder
(Geneva Observatory)
Mrs
Ekstrom Sylvia
(Geneva Observatory)
