IRAS 20050+2720: Clustering of Low Mass Stars

Abstract

IRAS 20050+2720 is a young star forming region at a distance of 700 pc with a mass of 430 M_⊙, but without apparent high mass stars. We characterize the distribution of young stellar objects (YSOs) in this region, which lacks high UV flux, and compare evolutionary trends with other young star forming clusters. We present results of our multiwavelength study of IRAS 20050+2720 which includes observations by Chandra, Spitzer, and 2MASS and UBVRI photometry. In total, about 300 YSOs in different evolutionary stages are found. We newly identify a second cluster core, which consists mostly of class II objects, about 2 pc from the center of the cloud. YSOs of earlier evolutionary stages are more clustered than more evolved objects. The X-ray luminosity function (XLF) of IRAS 20050+2720 is roughly lognormal, but steeper than the XLF of the more massive Orion nebula complex. The dust in IRAS 20050+2720 seems altered compared to the ISM.