[SS2011] VC9 , the SIMBAD biblio

2011AJ....142..179S - Astron. J., 142, 179 (2011/December-0)

Variables in globular cluster NGC 5024.

SAFONOVA M. and STALIN C.S.

Abstract (from CDS):

We present the results of a commissioning campaign to observe Galactic globular clusters for the search of microlensing events. The central 10' x10' 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.

Abstract Copyright:

Journal keyword(s): blue stragglers - globular clusters: general - globular clusters: individual: M53 - stars: variables: general

Nomenclature: Table 6: [SS2011] SXNN N=20 among (Nos SX2-SX25), [SS2011] SX9 1 N=1. Table 7: [SS2011] RRNN (Nos RR1-RR14). Table 8: [SS2011] WNN N=10 among (Nos W1-W13). Table 9: [SS2011] VCNN N=26 among (Nos VC1-VC28). Figs 3-5: [SS2011] VNN N (Nos V57 1 to V57 3, V72 1 to V72 5, V80 1 to V80 7).

Simbad objects: 150

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