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- W1978349095 abstract "view Abstract Citations (35) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Light and line profile variations die to r-mode pusations with an application to the ZZ Ceti star G 117-B15A. Kepler, S. O. Abstract A general formulation is presented for the effects of r-mode nonradial pulsations on the light curves and line profiles of a slowly rotating star, given a pulsation model, and model atmospheres. It is shown that the temperature perturbation, the gravity perturbation, and the light variations are proportional to the spheroidal component of the displacement, while the velocity perturbation is proportional to the toroidal component. Therefore, when calculating the observable effects of r-mode pulsations, it is necessary to include both the toroidal and the spheroidal components of the displacement in the calculations. The formalism is applied to the ZZ Ceti star G117-B15A. The results indicate that the observed variations of G117-B15A are not caused by r-mode pulsations, but are consistent with g-mode pulsations. Publication: The Astrophysical Journal Pub Date: November 1984 DOI: 10.1086/162601 Bibcode: 1984ApJ...286..314K Keywords: Light Curve; Limb Darkening; Stellar Oscillations; White Dwarf Stars; Absorption Spectra; Integral Equations; Stellar Rotation; Stellar Spectra; Astrophysics full text sources ADS | data products SIMBAD (1)" @default.
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- W1978349095 date "1984-11-01" @default.
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- W1978349095 title "Light and line profile variations due to r-mode pulsations with an application to the ZZ Ceti star G117-B15A" @default.
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