The effect of radial and non-radial stellar oscillations on the light, colour and velocity variations

Details The effect of radial and non-radial stellar oscillations on the light, colour and velocity variations The effect of radial and non-radial stellar oscillations on the light, colour and velocity variations

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189..649b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Dec. 1979, p. 649-658.

Astronomy and Astrophysics

Astrophysics

112

Cepheid Variables, Oscillations, Stellar Models, Stellar Motions, Variable Stars, Astrophysics, Brightness, Quadrupoles, Radial Velocity

Scientific paper

The effect of radial and non-radial stellar oscillations on the observed light, colour and velocity variations is examined. A method of estimating the phase lag, radius and other pulsation constants is applied to classical cepheids. Amplitude and phase relations for non-radially oscillating stars are discussed with particular emphasis on the quadrupole mode. The radial pulsation and quadrupole oscillation models for Beta Cep stars are discussed. Some effects are predicted for multiperiodic stars and a method of determining the radius and pulsation modes is suggested.

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