Theoretical interpretations of anomalous Cepheid pulsations

Details Theoretical interpretations of anomalous Cepheid pulsations Theoretical interpretations of anomalous Cepheid pulsations

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324.1042c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 324, Jan. 15, 1988, p. 1042-1047.

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Cepheid Variables, Galactic Clusters, Globular Clusters, Pulsars, Stellar Interiors, Stellar Luminosity, Computational Astrophysics, High Temperature

Scientific paper

Detailed pulsation studies have been made of five anomalous Cepheids in the Draco galaxy, one in the galactic globular cluster NGC 5466 and a possible anomalous Cepheid in M15. Observed quantities are periods, luminosities, and effective temperatures. Pulsation masses range from 1.0 to 1.8 solar masses, as found by others before. The variables with effective temperatures above 7000 K seem to be in the first overtone radial mode, while the others are fundamental pulsators. Investigations show that the masses and pulsation modes are independent of the assumed composition and details of the convection such as inclusion of the considerable turbulent pressure as part of the total pressure in the convection zone.

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