Other
Scientific paper
Nov 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...193..721w&link_type=abstract
Astrophysical Journal, vol. 193, Nov. 1, 1974, pt. 1, p. 721-727.
Other
25
Coupled Modes, Oscillations, Rotary Stability, Stellar Atmospheres, Stellar Rotation, Angular Velocity, Main Sequence Stars, Nonlinearity, Stellar Interiors, Stellar Spectra, Surface Properties, Variable Stars
Scientific paper
Slowly rotating stars which are oscillating at small amplitude in a broad spectrum of g-modes should display strong surface nonuniformities if even weak nonlinear coupling exists between the modes. Oscillatory power will be concentrated into distinctive patterns which rotate rigidly in spite of differential rotation in the outer stellar layers. Each pattern rotates at a constant rate slower than the star as a whole according to a very simple law of rotation. Virtually all the rotation rates are within 9 per cent of the stellar rate. Evidence is cited that the sun may be oscillating, so other stars along the main sequence may be oscillating, also. If zones obeying the predicted rotation law can be detected in a star, then the rotation rate of the stellar interior becomes known, and differential rotation is negligible over most of the stellar mass.
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