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The Masses and Luminosities of Globular Cluster RRc Stars

Published online by Cambridge University Press:  15 February 2018

Norman R. Simon  and
Christine M. Clement
Norman R. Simon
Affiliation:
Department of Physics and Astronomy, University of Nebraska - Lincoln
Christine M. Clement
Affiliation:
Department of Astronomy, University of Toronto

Abstract

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A large number of hydrodynamic pulsation models are converged in the first overtone, and their mean properties compared with observations of RRc stars in six globular clusters. The two observed quantities, period and Fourier parameter ϕ31, lead, via the models, to inferred values for mean mass, luminosity and temperature of the RRc sample in each cluster. We find a narrow range in intracluster RRc luminosity and temperature, but a wider range in mass. At the same time, the intercluster spread is wide in all three parameters. A full discussion of our techniques and results will be given elsewhere (Simon and Clement, in preparation).

Type
Windows on the Instability Strip
Information
International Astronomical Union Colloquium , Volume 139: New Perspectives on Stellar Pulsation and Pulsating Variable Stars , 1993 , pp. 315 - 323
Copyright
Copyright © Cambridge University Press 1993

References

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