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New Data on Period Changes of the RR Lyrae Stars in the Globular Cluster M53

Published online by Cambridge University Press:  12 April 2016

Grzegorz Kopacki*
Affiliation:
Wroclaw University Observatory, Kopernika 11, 51-622 Wroclaw, Poland

Abstract

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We present new data on the period changes of seven RRab stars in the globular cluster M53. The most interesting result of this work is the strong evidence for cyclic period changes for more than half of the studied RR Lyrae variables.

Type
Part 3. Cepheids, RR Lyrae Stars, Distance Scales
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Clement, C. 1997. Preliminary Fourth Edition of the Catalogue on Variable Stars in Globular Clusters, electronic versionGoogle Scholar
Lee, Y.W. 1991, ApJ, 367, 524 Google Scholar