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

Autor(en)

Adrian T. Potter, Christopher A. Tout, Ines Brott Furrer

Abstrakt

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.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

University of Cambridge

Journal

Monthly Notices of the Royal Astronomical Society

Band

423

Seiten

1221-1233

Anzahl der Seiten

13

ISSN

0035-8711

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

103004 Astrophysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/f90972a4-4e27-4c68-9595-c1f703ff2ecb