Pulsational Stability of Rotating Stars

Details Pulsational Stability of Rotating Stars Pulsational Stability of Rotating Stars

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1043..344l&link_type=abstract

EXPLORING THE SOLAR SYSTEM AND THE UNIVERSE. AIP Conference Proceedings, Volume 1043, pp. 344-350 (2008).

Astronomy and Astrophysics

Astronomy

1

Astronomical And Space-Research Instrumentation, Sequences, Series, And Summability, Calculus Of Variations, Partial Differential Equations, Stellar Characteristics And Properties

Scientific paper

We examine the effects of rapid rotation on the pulsational stability of low frequency oscillations of rotating main sequence stars of M~5Msolar, in which the low frequency modes are excited by the iron bump opacity mechanism. We find that the rapid rotation tends to stabilize the low frequency g-modes because of coupling with stable g-modes in the same frequency ranges. We also find that rapid rotation of the star stabilizes retrograde g-modes more strongly than prograde ones, and that the rotational deformation enhances the stabilization effect.

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