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Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters
T. Decressin, G. Meynet, C. Charbonnel +2
We propose the Wind of Fast Rotating Massive Stars scenario to explain the origin of the abundance anomalies observed in globular clusters. We compute and present models of fast ro…
Massive star evolution at high metallicity
Georges Meynet, Nami Mowlavi, Andre Maeder
After a review of the many effects of metallicity on the evolution of rotating and non-rotating stars, we discuss the consequences of a high metallicity on massive star populations…
Evolution of the first stellar generations
R. Hirschi, A. Maeder, G. Meynet +2
Although the theoretical study of very low metallicity (Z) and metal-free stars is not new, their importance has recently greatly increased since two related fields have been devel…
CNO production in first generation stars
Sylvia Ekström, Georges Meynet, André Maeder
Big Bang nucleosynthesis produces only light elements and the very first generation stars are thus formed from metal-free clouds. They start the production of heavy elements during…
Mass loss of rotating stars at very low metallicity
Georges Meynet, Andre Maeder, Raphael Hirschi +2
Some indirect observations, as the high fraction of Be stars at low metallicity, or the necessity for massive stars to be important sources of primary nitrogen, seem to indicate th…
The impact of stellar rotation on the CNO abundance patterns in the Milky Way at low metallicities
C. Chiappini, R. Hirschi, F. Matteucci +3
We investigate the effect of new stellar models, which take rotation into account, computed for very low metallicities on the chemical evolution of the earliest phases of the Milky…