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Impact of rotation on stellar models
Georges Meynet, Andre Maeder, Patrick Eggenberger +5
After a brief recall of the main impacts of stellar rotation on the structure and the evolution of stars, four topics are addressed: 1) the links between magnetic fields and rotati…
-process production in rotating massive stars at solar and low metallicities
Urs Frischknecht, Raphael Hirschi, Marco Pignatari +7
Rotation was shown to have a strong impact on the structure and light element nucleosynthesis in massive stars. In particular, models including rotation can reproduce the primary n…
Clues about the first stars from CEMP-no stars
Arthur Choplin, Georges Meynet, André Maeder
The material used to form the CEMP-no stars presents signatures of material processed by the CNO cycle and by He-burning from a previous stellar generation called the source stars.…
Synthetic clusters of massive stars to test stellar evolution models
Cyril Georgy, Sylvia Ekström
During the last few years, the Geneva stellar evolution group has released new grids of stellar models, including the effect of rotation and with updated physical inputs (Ekström e…
Massive star evolution in close binaries:conditions for homogeneous chemical evolution
H. F. Song, G. Meynet, A. Maeder +2
We investigate the impact of tidal interactions, before any mass transfer, on various properties of the stellar models. We study the conditions for obtaining homogeneous evolution…
Mass loss of red supergiants: a key ingredient for the final evolution of massive stars
Cyril Georgy, Sylvia Ekström
Mass-loss rates during the red supergiant phase are very poorly constrained from an observational or theoretical point of view. However, they can be very high, and make a massive s…