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Catalog Service:
Variable stars in Fornax dSph. III.

Short name: J/ApJ/701/1323
IVOA Identifier: ivo://CDS.VizieR/J/ApJ/701/1323
DOI (Digital Object Identifier): 10.26093/cds/vizier.17011323
Publisher: CDS[+][Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/701/1323
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2011 Oct 20 11:01:13Z
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Description


We present a new study of the variable star population in globular cluster 5 of the Fornax dSph, based on B and V time series photometry obtained with the MagIC camera of the 6.5m Magellan Clay telescope and complementary Hubble Space Telescope archive data. Light curves and accurate periodicities were obtained for 30 RR Lyrae stars and one SX Phoenicis variable. The RR Lyrae sample includes 15 fundamental-mode pulsators, 13 first-overtone pulsators, one candidate double-mode pulsator and one RR Lyrae star with uncertain type classification. The average and minimum periods of the ab-type RR Lyrae stars, <P_ab_>=0.590days, P_ab,min_=0.53297days and the position in the horizontal branch type-metallicity plane, indicate that the cluster has Oosterhoff-intermediate properties, basically confirming previous indications by Mackey & Gilmore, although with some differences both in the period and type classification of individual variables.

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