C. C. Lin, W. P. Chen, E. A. Magnier
We have developed a star-counting algorithm and tested it on the 2MASS star
catalog to search for density enhancements significantly above the field in
Galactic latitude $|b|<50^{\circ}$. Nearly 500 open clusters are
"rediscovered", along with 89 globular clusters, 35 galaxies, 55 galaxy
clusters, 11 H II regions, and 4 regions contaminated by nearby bright stars.
Fifty-two density enhancement regions remain unaccounted for. Here we present
one such candidate HDG\,01, $(\ell, b)=(144.9038, 0.4338)$ which has an angular
size of 3', a distance of 1.5 kpc, hence a physical size of 3.7 pc. Due to some
nebulous shape, this star cluster should be an young-aged ($\le 10$ Myr).
View original:
http://arxiv.org/abs/1111.7179
No comments:
Post a Comment