The Internal Rotation of the GW Vir Star PG 0112+200 through the Eyes of Asteroseismology

CORSICO, A.; ALTHAUS, L.; KAWALER, S. D.; MILLER BERTOLAMI, M. M.; GARCIA-BERRO, E.

Hakone

Congreso; Progress in Solar/Stellar Physics with Helio- and Asteroseismology.; 2011

We investigate the internal rotation profile of the GW Vir (PG1159-type) star PG 0122+200 by employing an asteroseismological model that closely reproduces the observed periods of this star. We adopt a forward approach and two inversion methods based on the rotational splitting of the pulsation frequencies to explore the properties of the rotation of PG 0122+200. We found evidence for differential rotation in this star.