Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.232..711l&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 232, June 15, 1988, p. 711-724. Research supported by t
Astronomy and Astrophysics
Astronomy
15
B Stars, Convection Currents, Magnetohydrodynamic Stability, Main Sequence Stars, Stellar Rotation, Corotation, Gravity Waves, Resonant Frequencies, Stellar Envelopes, Stellar Models
Scientific paper
Overstable convective modes of differentially rotating massive main-sequence stars are explored, and the excitation of nonradial oscillations in the envelope by resonance couplings with the overstable convective modes in the rapidly rotating core is investigated. Under the assumption of a differential rotation which is such that the convective core rotates more rapidly than the envelope of the star, the overstable convective modes are found to excite the lower-order nonradial g-modes. As the ratio of the angular velocity of the convective core to that of the envelope increases, the order of the nonradial g-modes coupled with the convective mode is shown to decrease, and short-period oscillations excited in an inertial frame are observed.
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