Can pulsational instabilities impact a massive star's rotational evolution?

Details Can pulsational instabilities impact a massive star's rotational evolution? Can pulsational instabilities impact a massive star's rotational evolution?

2008-03-03

arxiv.org/abs/0803.0347v1

Astronomy and Astrophysics

Astrophysics

6 pages, to appear in Proc. IAU Symposium 250: Massive Stars as Cosmic Engines

Scientific paper

10.1017/S1743921308020450

We investigate whether angular momentum transport due to unstable pulsation
modes can play a significant role in the rotational evolution of massive stars.
We find that these modes can redistribute appreciable angular momentum, and
moreover trigger shear-instability mixing in the molecular weight gradient zone
adjacent to stellar cores, with significant evolutionary impact.

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