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Period Changes of RR Lyrae Stars in the LMC Globular Cluster NGC 2257

Published online by Cambridge University Press:  04 August 2017

James M. Nemec ,
Martha H. Liller  and
James E. Hesser
James M. Nemec
Affiliation:
Dominion Astrophysical Observatory Department of Astronomy, University of Washington
Martha H. Liller
Affiliation:
Dominion Astrophysical Observatory
James E. Hesser
Affiliation:
Dominion Astrophysical Observatory

Extract

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The period changes of RR Lyrae stars can be compared with models of horizontal branch stars as a means of investigating the physical properties of the stars themselves, and of the stellar systems in which they are found (Smith and Sandage 1981). The present study is the first in which period change rates of extragalactic RR Lyraes have been estimated.

Type
Magellanic Cloud Clusters
Information
Symposium - International Astronomical Union , Volume 108: Structure and Evolution of the Magellanic Clouds , 1984 , pp. 39 - 40
Copyright
Copyright © Reidel 1984 

References

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