Non-adiabatic analysis of low-frequency oscillations of uniformly rotating stars

Details Non-adiabatic analysis of low-frequency oscillations of uniformly rotating stars Non-adiabatic analysis of low-frequency oscillations of uniformly rotating stars

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.225..643l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 225, April 1, 1987, p. 643-651.

Statistics

Computation

31

Computational Astrophysics, Main Sequence Stars, Nonadiabatic Conditions, Stellar Oscillations, Stellar Rotation, Boundary Value Problems, Convective Flow, Linear Equations

Scientific paper

The authors have calculated the fully non-adiabatic oscillations, of a uniformly rotating star, which have frequencies comparable with or less than that of rotation. The results are summarized as follows: (1) The overstable convective modes coupled with high-order g-modes in the envelope remain overstable even when the non-adiabatic effects are included. This result supports the authors' previous conclusion based on the adiabatic analysis that the overstable convective modes coupled with higher order g-modes may be responsible for the non-radial oscillations observed in the variable B stars. (2) Some purely oscillatory convective modes in adiabatic approximation become unstable, when the thermal effects are introduced. These modes have appreciable amplitude only in the convective core and hence are not observable on the surface. (3) Because of the absence of the strong destabilization mechanisms in the envelope and/or in the core, low-frequency oscillations of g-modes and r-modes are all stabilized by the radiative damping in the envelope. Their coupling with purely oscillatory convective modes works only for reducing the damping rates.

Affiliated with

Also associated with

No associations

Rating

Non-adiabatic analysis of low-frequency oscillations of uniformly rotating stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-adiabatic analysis of low-frequency oscillations of uniformly rotating stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-adiabatic analysis of low-frequency oscillations of uniformly rotating stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1349215