The effects of moderately fast shellular rotation on adiabatic oscillations

Details The effects of moderately fast shellular rotation on adiabatic oscillations The effects of moderately fast shellular rotation on adiabatic oscillations

2005-11-21

arxiv.org/abs/astro-ph/0511602v2

Astronomy and Astrophysics

Astrophysics

A&A, in press (18 pag, 14 fig)

Scientific paper

10.1051/0004-6361:20054181

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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