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Period Variation of the Pop.II Cepheid AU Peg

Published online by Cambridge University Press:  15 February 2018

J. Vinko
J. Vinko*
Affiliation:
JATE University, Szeged, and Konkoly Observatory, Budapest, Hungary

Abstract

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AU Peg, a short period BL Her-type variable, is unique among short period Cepheids. It is a member of a close binary system with an unseen companion. In t his paper the pulsational period variation is presented. It is shown that the period variation is very rapid and highly non-linear. It seems that there is no simple explanation of this phenomena by standard evolution or tidal interaction.

Type
Windows on the Instability Strip
Information
International Astronomical Union Colloquium , Volume 139: New Perspectives on Stellar Pulsation and Pulsating Variable Stars , 1993 , pp. 423 - 424
Copyright
Copyright © Cambridge University Press 1993

References

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