CCD Photometry of Variable Stars in the Globular Cluster NGC 288
Astrophysics
2007-05-23 v1
Abstract
The central part of the globular cluster NGC 288 was surveyed in a search for short-period variable stars. We obtained the V-band light curves for 4 SX Phe stars and 2 RR Lyrae variables, five of which are new discoveries. All SX Phe stars belong to blue stragglers. We present a color-magnitude diagram including stars from the tip of red giant branch to the level of the main-sequence turnoff. Three likely hot subdwarfs were located on the extension of the blue horizontal branch of the cluster.
Keywords
Cite
@article{arxiv.astro-ph/9601052,
title = {CCD Photometry of Variable Stars in the Globular Cluster NGC 288},
author = {J. Kaluzny},
journal= {arXiv preprint arXiv:astro-ph/9601052},
year = {2007}
}
Comments
12 pages including 6 figures, uuencoded postscript file, submitted to A&A