期刊
ASTROPHYSICAL JOURNAL
卷 621, 期 1, 页码 L61-L64出版社
UNIV CHICAGO PRESS
DOI: 10.1086/428945
关键词
open clusters and associations : general; open clusters and associations : individual (Whiting 1)
We report on BVI CCD photometry of a field centered in the region of the Galactic star cluster Whiting 1 down to V = 23.0. This cluster has never been studied insofar, and we provide for the first time estimates of its fundamental parameters, namely, radial extent, age, distance, and reddening. Whiting 1 turns out to be a compact star cluster with a diameter of about 1'. We find that the cluster is about 5 Gyr old and has a probable metal abundance around [Fe/H] = -1.20. Its position at b = -60.degrees64 and at a heliocentric distance of about 45 kpc makes the cluster a rather strange object, surely not a disk old open cluster, but perhaps the youngest halo globular cluster insofar known.
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