Whiting 1: a new Halo Young Globular Cluster
Astrophysics
2009-11-10 v1
Abstract
We report on CCD photometry of a field centered in the region of the Galactic star cluster Whiting~1 down to . 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 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.
Keywords
Cite
@article{arxiv.astro-ph/0501465,
title = {Whiting 1: a new Halo Young Globular Cluster},
author = {Giovanni Carraro},
journal= {arXiv preprint arXiv:astro-ph/0501465},
year = {2009}
}
Comments
16 pages, 7 eps figure, accepted for publication as ApJ Letter