Relations of the Light-Curve Parameters of RRab Stars in Globular Clusters

Johanna Jurcsik and János Nuspl

The widely used photometric metallicity formula presupposes that a unique combination of the light-curve parameters exists that gives a constant, cluster-by-cluster different value for globular clusters. In order to check the validity and the accuracy of any such formula, a database of the V-band light-curve parameters of regular RRab stars in Galactic globular clusters is collected and analysed. Preliminary results and conclusions are presented.

Proceedings of the Polish Astronomical Society, vol. 6, 300-301 (2018)

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