Variable stars in the field of the globular cluster E3

Details Variable stars in the field of the globular cluster E3 Variable stars in the field of the globular cluster E3

2000-02-17

arxiv.org/abs/astro-ph/0002341v1

ActaAstron.50:105,2000

Astronomy and Astrophysics

Astrophysics

7 pages, Latex, 3 Postscript figures, submitted to Acta Astronomica

Scientific paper

We present the results of a search for variable stars in the faint sparse globular cluster E3. We have found two variable stars: an SX Phe variable (V1) and a W UMa eclipsing binary (V2). We have applied period-luminosity and period-color-luminosity relations to the variables to obtain their distance moduli. V1 seems to be a blue straggler belonging to E3, based on its distance modulus and location on the CMD. V2 is probably located behind the cluster, in the Milky Way halo. We also present V/B-V and V/V-I color magnitude diagrams of E3.

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