Catalogue of variable stars in open cluster fields
Miloslav Zejda, Ernst Paunzen, Bernhard Baumann, Zdenek Mikulasek, and, Jiri Liska

TL;DR
This paper introduces the first comprehensive catalogue of variable stars in open cluster regions, providing essential data for studying stellar and cluster characteristics across the sky.
Contribution
It compiles and cross-matches variable star data with open cluster catalogues, creating a valuable resource for future astrophysical research.
Findings
Contains 18,065 variable stars in open cluster fields.
Provides statistical distribution of variable star types.
Facilitates combined analysis of star and cluster properties.
Abstract
We present the first catalogue of known variable stars in open cluster regions and with up to two times the given cluster radius. This gives basic information about the distribution of variable stars in cluster fields for the complete sky. Knowledge of the variable star contents in open clusters is a significant advantage in their study. Analysing variability of cluster members and fields stars as well, allows us to study the characteristics of stars and clusters together. This catalogue of variable stars in open cluster fields is the first step in supporting such studies. We took all variable and suspected variable stars into account from the most complete collection, "The AAVSO Variable Star Index", and did a cross-match of these stars with the most complete catalogue of galactic open clusters named DAML02. Our on-line catalogue presently contains 18 065 variable stars. We present the…
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