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Effects of anisotropic winds on massive stars evolution
Cyril Georgy, Georges Meynet, André Maeder
Whenever stars are rotating very fast (Omega/Omega_crit > 0.7, with Omega_crit the Keplerian angular velocity of the star accounting for its deformation) radiative stellar winds ar…
Massive star models with magnetic braking
Georges Meynet, Patrick Eggenberger, Andre Maeder
Magnetic fields at the surface of a few early-type stars have been directly detected. These fields have magnitudes between a few hundred G up to a few kG. In one case, evidence of…
Massive stellar models: rotational evolution, metallicity effects
Sylvia Ekström, Cyril Georgy, Georges Meynet +2
The Be star phenomenon is related to fast rotation, although the cause of this fast rotation is not yet clearly established. The basic effects of fast rotation on the stellar struc…
Effects of rotational mixing on the asteroseismic properties of solar-type stars
P. Eggenberger, G. Meynet, A. Maeder +6
The influence of rotational mixing on the evolution and asteroseismic properties of solar-type stars is studied. Rotational mixing changes the global properties of a solar-type sta…
Mixing of CNO-cycled matter in massive stars
N. Przybilla, M. Firnstein, M. F. Nieva +2
Aims: We test predictions of evolution models on mixing of CNO-cycled products in massive stars from a fundamental perspective. Relative changes within the theoretical C:N:O abunda…
The GSF Instability and Turbulence do not Account for the Relatively Low Rotation Rate of Pulsars
Raphael Hirschi, André Maeder
The aim of this paper is to examine the effects of the horizontal turbulence in differentially rotating stars on the GSF instability and apply our results to pre-supernova models.…