Theoretical pulsations of the beta Cephei variable alpha Virginis

Details Theoretical pulsations of the beta Cephei variable alpha Virginis Theoretical pulsations of the beta Cephei variable alpha Virginis

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pccv.conf..332c&link_type=abstract

Pulsations in Classical and Cataclysmic Variable Stars, Proceedings of the conference held 1-4 June 1982 in Boulder, CO. Edited

Astronomy and Astrophysics

Astrophysics

Cepheid Variables, Convection, Hydrogen, Luminosity, Pulsars, Variable Stars, Mathematical Models, Optical Properties, Physical Properties, Radial Velocity, Turbulence

Scientific paper

A convective overshooting at the edge of the turbulently convective core of Beta Cephei variables which causes periodic mixing of hydrogen into the otherwise depleted core was suggested. The extra pressure at the mixing shell, due to the newly added hydrogen gives periodic pushes on the envelope and the pulsations grow. For the specific model, 2 Virginis is used, which has well-known mass, radius and luminosity. The recent stopping of the pulsations of this star indicates that the proposed overshooting growth of the convective core may be temporarily terminated.

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