Differential rotation in early type stars

J. Zorec; Y. Frémat; A. Domiciano De Souza

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arXiv · astro-ph/0601068

Differential rotation in early type stars

J. Zorec·Y. Frémat·A. Domiciano De Souza

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Abstract

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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J. Zorec, Y. Frémat, A. Domiciano De Souza. 2006-01-04. Differential rotation in early type stars. https://arxiv.org/abs/astro-ph/0601068

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