New opacities and first overtone mode Cepheids

Details New opacities and first overtone mode Cepheids New opacities and first overtone mode Cepheids

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.210..331a&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 210, no. 1-2, p. 331-332 (IAU Colloquium 134)

Astronomy and Astrophysics

Astrophysics

Cepheid Variables, Harmonics, Opacity, Stellar Models, Stellar Oscillations, Light Curve, Resonance, Stellar Luminosity, Stellar Mass

Scientific paper

Some results of linear adiabatic and nonlinear pulsation models of first overtone mode Cepheids are discussed. New and augmented opacities and a nonstandard mass-luminosity relation have been taken into account. The models indicated the possible importance of the resonance P1/P4 = 2 near P1 = 3 days. The resonance could explain the observed characteristics of the light curve shape of first overtone mode Cepheids.

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