CCD BVR photometry of the open cluster IC 1311
Six CCD frames for two fields in the area of the rich, presumably old, and unstudied open cluster IC 1311 have been obtained in the BVR bands. The photometric analysis leads to an estimated age of between 1 Gyr (standard models) and 2 Gyr (overshooting models), placing the cluster at a distance of about 4.8 kpc from the sun. Comparison of the
Alfaro, Emilio J. et al.
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1992