• DOI:10.1088/0004-6256/142/6/179
• Corpus ID: 118419144

VARIABLES IN GLOBULAR CLUSTER NGC 5024

@article{Safonova2011VARIABLESIG,
  title={VARIABLES IN GLOBULAR CLUSTER NGC 5024},
  author={Margarita Safonova and C. S. Stalin},
  journal={The Astronomical Journal},
  year={2011},
  volume={142},
  pages={179}
}

• M. Safonova, C. .. Stalin
• Published 22 May 2011
• Physics
• The Astronomical Journal

We present the results of a commissioning campaign to observe Galactic globular clusters for the search of microlensing events. The central 10' × 10' region of the globular cluster NGC 5024 was monitored using the 2 m Himalayan Chandra Telescope in R-band for a period of about 8 hr on 2010 March 24. Light curves were obtained for nearly 10,000 stars using a modified Differential Image Analysis technique. We identified all known variables within our field of view and revised the periods and status of some previously reported short-period variables. We report about 70 new variable sources and present their equatorial coordinates, periods, light curves, and possible types. Out of these, 15 are SX Phe stars, 10 are W UMa-type stars, and 14 are probable RR Lyrae stars. Nine of the newly discovered SX Phe stars and one eclipsing binary belong to the blue straggler star population.