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The Instability Strip of M3

Published online by Cambridge University Press:  12 April 2016

G. Á. Bakos  and
J. Jurcsik
G. Á. Bakos
Affiliation:
Konkoly Observatory, P.O. Box 67, H-1525 Budapest XII, Hungary
J. Jurcsik
Affiliation:
Konkoly Observatory, P.O. Box 67, H-1525 Budapest XII, Hungary

Abstract

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We present new multicolour CCD photometry of the central part of the globular cluster M3, mapping the precise position of ~ 120 RR Lyrae stars (RRab, RRd, RRc) on the horizontal branch (HB). The location of the double-mode variables (RRd) is in perfect agreement with recent theoretical results. We find a significant internal spread of metallicity amongst the RRab variables.

Type
Part 3. Cepheids, RR Lyrae Stars, Distance Scales
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 255 - 256
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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