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arXiv · astro-ph/9410015

Variable Stars in the Field of the Open Cluster NGC 7789

K. Jahn·J. Kaluzny·S. M. Rucinski
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Abstract

Fifteen variable stars have been discovered during four nights of monitoring of NGC 7789. It was possible to determine periods for ten of these variables. Seven objects are W UMa-type binaries, in this number five are members of the cluster. Among the remaining variables, there are three further close binaries, one delta Scuti which is a Blue Straggler in the cluster, and one multi-modal variable (with indeterminable periods). One of the binaries showed an eclipse-like event; this binary is a good candidate for determination of masses of its components at the turn-off point of the cluster.

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K. Jahn, J. Kaluzny, S. M. Rucinski. 1994-10-05. Variable Stars in the Field of the Open Cluster NGC 7789. https://arxiv.org/abs/astro-ph/9410015

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