Mode discrimination in nonradially oscillating stars from light, colour and velocity observations

Details Mode discrimination in nonradially oscillating stars from light, colour and velocity observations Mode discrimination in nonradially oscillating stars from light, colour and velocity observations

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ssrv...27..371b&link_type=abstract

(International Astronomical Union, Colloquium on Stellar Hydrodynamics, 58th, Los Alamos, N. Mex., Aug. 12-15, 1980.) Space Scie

Astronomy and Astrophysics

Astronomy

3

Modal Response, Radial Velocity, Stellar Oscillations, Stellar Radiation, Variable Stars, Cepheid Variables, Phase Error, Phase Shift

Scientific paper

Expressions for the amplitudes and phases of the light, colour and radial velocity variations are derived for a star in nonradial oscillation. For stars in the Cepheid instability strip the spherical harmonic mode of the oscillation can be obtained from the phase difference between the light and color variations. For Beta Cep stars the mode can be estimated from the amplitude ratio of the light and colour variations.

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