Towards a unified model of stellar rotation - II. Model-dependent characteristics of stellar populations

Rotation has a number of important effects on the evolution of stars. Apart from structural changes because of the centrifugal force, turbulent mixing and meridional circulation caused by rotation can dramatically affect a star's chemical evolution. This leads to changes in the surface temperat...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2012-06, Vol.423 (2), p.1221-1233
Main Authors: Potter, Adrian T., Tout, Christopher A., Brott, Ines
Format: Article
Language:English
Subjects:
Stars & galaxies
stars: abundances
stars: chemically peculiar
stars: evolution
stars: general
stars: rotation
Temperature effects
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Summary:Rotation has a number of important effects on the evolution of stars. Apart from structural changes because of the centrifugal force, turbulent mixing and meridional circulation caused by rotation can dramatically affect a star's chemical evolution. This leads to changes in the surface temperature and luminosity as well as modifying its lifetime. Observationally, rotation decreases the surface gravity, causes enhanced mass loss and leads to surface abundance anomalies of various chemical isotopes. The replication of these physical effects with simple stellar evolution models is very difficult and has resulted in the use of numerous different formulations to describe the physics. Using stellar evolution calculations based on several physical models, we discuss the features of the resulting simulated stellar populations which can help to distinguish between the models.
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2012.20952.x