Effects of moderately fast shellular rotation on adiabatic oscillations

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.