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The effects of moderately fast shellular rotation on adiabatic oscillations

J. C. Suarez·M. J. Goupil·P. Morel
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Abstract

We investigate adiabatic oscillations for delta Scuti star models, taking into account a moderate rotation velocity ~100 \km/s. 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 Omega=Omega(r) on oscillation frequencies are compared. As expected, important differences (around 3 microHz) are obtained in the $g$ and mixed mode regions. For higher frequency p modes, differences range between 1 microHz and 3 microHz. Such differences are likely to be detectable with future space missions such as COROT, where precisions in frequency around 0.5 microHz will be reachable.

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J. C. Suarez, M. J. Goupil, P. Morel. 2005-11-22. The effects of moderately fast shellular rotation on adiabatic oscillations. https://doi.org/10.1051/0004-6361%3A20054181

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