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Mode Discrimination in Nonradially Oscillating Stars From Light, Colour and Velocity Observations

Published online by Cambridge University Press:  12 April 2016

L.A. Balona  and
R.S. Stobie
L.A. Balona
Affiliation:
South African Astronomical Observatory
R.S. Stobie
Affiliation:
Royal Observatory Edinburgh

Abstract

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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 colour variations. For 3 Cep stars the mode can be estimated from the amplitude ratio of the light and colour variations.

Type
IV. δ Scuti and Dwarf Cepheid Variables
Information
International Astronomical Union Colloquium , Volume 58: Stellar Hydrodynamics , August 1980 , pp. 371 - 376
Copyright
Copyright © Reidel 1980

References

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