We take advantage of interferometric measurements of Achernar to inquire on its internal rotational law. The reinterpretation of interferome-tric data and the use of fundamental parameters corrected for gravitational darkening effects and models of 2D-models of internal stellar structures, lead us to the conclusion that the star could not be a rigid, near critical, rotator but a differential rotator with the core rotating ∼3 times faster than the surface.
@article{arxiv.astro-ph/0509173,
title = {Achernar Can be a Differential Rotator},
author = {Juan Zorec and Armando Domiciano De Souza and Yves Fremat and Farok Vakli},
journal= {arXiv preprint arXiv:astro-ph/0509173},
year = {2007}
}
Comments
Societe Francaise d'Astronomie et d'Astrophysique, France (2005)