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The Clusters AgeS Experiment (CASE). Variable stars in the field of the globular cluster NGC 362

Rozyczka M., Thompson I. B., Narloch W., Pych W., Schwarzenberg-Czerny A.

Acta Astronomica

2016

Vol. 66, No. 3

307--332

The field of the globular cluster NGC 362 was monitored between 1997 and 2015 in a search for variable stars. BV light curves were obtained for 151 periodic or likely periodic variable stars, over a hundred of which are new detections. Twelve newly detected variable stars are proper-motion members of the cluster: two SX Phe and two RR Lyr pulsators, one contact binary, three detached or semi-detached eclipsing binaries, and four spotted variable stars. The most interesting objects among these are the binary blue straggler V20 with an asymmetric light curve, and the 8.1 d semidetached binary V24 located on the red giant branch of NGC 362, which is a Chandra X-ray source. We also provide substantial new data for 24 previously known variable stars.