Constraints on models of beat Cepheids

Details Constraints on models of beat Cepheids Constraints on models of beat Cepheids

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...225l..39c&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 225, Oct. 1, 1978, p. L39, L40.

Astronomy and Astrophysics

Astrophysics

5

Cepheid Variables, Stellar Luminosity, Stellar Mass, Stellar Models, Eigenvalues, Inhomogeneity

Scientific paper

The theoretical instability strip in the P1/P0 vs. log P0 plane (P0 is the fundamental period, P1 the first overtone) is plotted for both homogeneous and inhomogeneous models. Neither fits the observed strip: inhomogeneous models have the wrong slope; homogeneous models have the correct slope, but the P1/P0 values are too large. It may not be possible to reproduce the observed data with any sort of reasonable equilibrium model by using a linear eigenvalue analysis.

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