Effects of moderately fast shellular rotation on adiabatic oscillations
Instituto de Astrofísica de Andalucía (CSIC), CP 3004, Granada, Spain e-mail: email@example.com
2 LESIA, UMR 8109, Observatoire de Paris-Meudon, France
3 Observatoire de la Côte d'Azur, Nice, France
Accepted: 11 November 2005
We investigate adiabatic oscillations for δ Scuti star models, taking a moderate rotation velocity (around ) into account. The resulting oscillation frequencies include corrections for rotation up to second order in the rotation rate including those of near degeneracy. Effects of either a uniform rotation or a rotation profile assuming local angular momentum conservation of the form on oscillation frequencies are compared. As expected, important differences (around ) are obtained in the g and mixed-mode regions. For higher-frequency p modes, differences range between and . Such differences are likely to be detectable with future space missions such as COROT, where precisions in frequency around are expected to be reached.
Key words: stars: variables: δ Sct / stars: rotation / stars: oscillations / stars: interiors / stars: fundamental parameters / stars: evolution
© ESO, 2006