Massive star evolution: from the early to the present day Universe

Details Massive star evolution: from the early to the present day Universe Massive star evolution: from the early to the present day Universe

2008-06-25

arxiv.org/abs/0806.4063v1

Astronomy and Astrophysics

Astrophysics

11 pages, 7 figures, IAU Symp. 252, L. CUP, Deng, K.L. Chan, C. Chiosi, eds

Scientific paper

10.1017/S1743921308023119

Mass loss and axial rotation are playing key roles in shaping the evolution of massive stars. They affect the tracks in the HR diagram, the lifetimes, the surface abundances, the hardness of the radiation field, the chemical yields, the presupernova status, the nature of the remnant, the mechanical energy released in the interstellar medium, etc... In this paper, after recalling a few characteristics of mass loss and rotation, we review the effects of these two processes at different metallicities. Rotation probably has its most important effects at low metallicities, while mass loss and rotation deeply affect the evolution of massive stars at solar and higher than solar metallicities.

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