No Open Cluster in the Ruprecht 93 Region
Solar and Stellar Astrophysics
2015-05-19 v1
Abstract
UBVI CCD photometry has been obtained for the Ruprecht 93 (Ru 93) region. We were unable to confirm the existence of an intermediate-age open cluster in Ru 93 from the spatial distribution of blue stars. On the other hand, we found two young star groups in the observed field: the nearer one (Ru 93 group) comprises the field young stars in the Sgr-Car arm at d ~ 2.1 kpc, while the farther one (WR 37 group) is the young stars around WR 37 at d ~ 4.8 kpc. We have derived an abnormal extinction law (Rv = 3.5) in the Ruprecht 93 region.
Cite
@article{arxiv.1007.2686,
title = {No Open Cluster in the Ruprecht 93 Region},
author = {S. Cheon and H. Sung and M. S. Bessell},
journal= {arXiv preprint arXiv:1007.2686},
year = {2015}
}
Comments
6 pages, 6 figures, JKAS 2010, in press (Aug issue)