Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ara..conf..245m&link_type=abstract
ASTRONOMY AND RELATIVISTIC ASTROPHYSICS New Phenomena and New States of Matter in the Universe. Proceedings of the Third Worksho
Astronomy and Astrophysics
Astrophysics
Evolution, Stellar Rotation, Rotational Braking
Scientific paper
The evolution of stars largely driven by rotation, controls a large number of internal and atmospheric stellar phenomena. In the present work we study the evolutionary behavior of stellar rotation along the HR Diagram, taking into account constraint conditions issued from recent observational survey of rotational velocity carried out with high precision procedures and new evolutionary codes. Theoretical predictions are presented for the evolutionary behavior of rotational velocity of solar-type giant and subgiant stars. We show that those simulations taking into account only the stellar evolutionary effects (increasing of moment of inertia) are unable to reproduce the observed rotational velocity of giant and subgiant stars. Different levels of magnetic braking appear to be acting on the rotation of evolved stars.
de Freitas D. B.
de Medeiros Jose Renan
Maciel S. C.
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