Nonlinear models of first overtone mode Cepheids

Details Nonlinear models of first overtone mode Cepheids Nonlinear models of first overtone mode Cepheids

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279..119a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 1, p. 119-124

Astronomy and Astrophysics

Astrophysics

15

Cepheid Variables, Harmonics, Nonlinear Systems, Resonance, Stellar Models, Stellar Oscillations, Fourier Analysis, Light Curve, Mass, Mathematical Models, Opacity, Stellar Luminosity

Scientific paper

Nonlinear models of population I Cepheids pulsating in the first overtone mode have been constructed using augmented opacities and a nonstandard mass-luminosity relation. The properties of the Fourier parameters of their light curves are discussed and compared with those of observed stars. It is shown that the models reproduce in part the observed behavior of first overtone Cepheids, and confirm the importance of the resonance P1/P4 = 2 between the first and fourth overtone modes.

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