Differential rotation in early type stars

Details Differential rotation in early type stars Differential rotation in early type stars

2006-01-04

arxiv.org/abs/astro-ph/0601068v1

Astronomy and Astrophysics

Astrophysics

3 pages ; to appear in the proceedings of the Sapporo meeting on active OB stars ; ASP Conference Series ; eds: S. Stefl, S. O

Scientific paper

Using 2D models of rotating stars, the interferometric measurements of alpha Eri and its fundamental parameters corrected for gravitational darkening effects we infer that the star might have a core rotating 2.7 times faster than the surface. We explore the consequences on spectral lines produced by surface differential rotation combined with the effects due to a kind of internal differential rotation with rotational energies higher than allowed for rigid rotation which induce geometrical deformations that do not distinguish strongly from those carried by the rigid rotation.

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