Zorec, J. ; Frémat, Y. ; Domiciano de Souza, A.

published in Active OB-Stars: Laboratories for Stellare and Circumstellar Physics, 361, pp. 542 (2007)

Abstract: Using 2D models of rotating stars, the interferometric measurements of aEri 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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