Iras 20050+2720: Anatomy of a Young Stellar Cluster

نویسندگان

  • H. M. Günther
  • T. L. Bourke
چکیده

IRAS 20050+2720 is young star forming region at a distance of 700 pc without apparent high mass stars. We present results of our multiwavelength study of IRAS 20050+2720 which includes observations by Chandra and Spitzer, and 2MASS and UBVRI photometry. In total, about 300 YSOs in different evolutionary stages are found. We characterize the distribution of young stellar objects (YSOs) in this region using a minimum spanning tree (MST) analysis. We newly identify a second cluster core, which consists mostly of class II objects, about 10 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. IRAS 20050+2720 shows a lower NH/AK ratio compared with the diffuse ISM. Subject headings: circumstellar matter – infrared: stars – Stars: formation – Stars: pre-main sequence – X-rays: stars

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

IRAS 06562−0337, The Iron Clad Nebula: A New Young Star Cluster

IRAS 06562−0337 has been the recent subject of a classic debate: protoplanetary nebula or young stellar object? We present the first 2μm image of IRAS 06562−0337, which reveals an extended diffuse nebula containing approximately 70 stars inside a 30 radius around a bright, possibly resolved, central object. The derived stellar luminosity function is consistent with that expected from a single c...

متن کامل

IRAS 12326 - 6245 : Luminous very young stellar objects with a massive molecular outflow ?

We present a comprehensive study of the luminous young stellar object IRAS 12326-6245 at nearand mid-infrared wavelengths as well as in the millimetre wavelength range. IRAS 12326-6245 is associated with two ultracompact H ii regions. These massive young stellar objects are surrounded by a cluster of stars revealed by the near-infrared images. With N and Q-band imaging, we find four very deeply...

متن کامل

ar X iv : a st ro - p h / 04 02 33 7 v 1 1 3 Fe b 20 04 The stellar population associated with the IRAS source 16132 - 5039 1

We report the discovery of a young massive stellar cluster and infrared nebula in the direction of the CS molecular cloud associated to the IRAS point source 16132-5039. The analysis of the mid-infrared images from the more accurate MSX catalog, reveled that there are two independent components associated with the IRAS source. The integral of the spectral energy distribution for these component...

متن کامل

IRAS 18511 + 0146 : a proto Herbig Ae / Be cluster ?

Context. The evolution of a young protocluster depends on the relative spatial distribution and dynamics of both stars and gas. Aims. We study the distribution and properties of the gas and stars surrounding the luminous (10 4 L⊙) protocluster IRAS 18511+0146. Methods. IRAS 18511+0146 and the cluster associated with it has been investigated using the sub-millimetre (JCMT-SCUBA), infrared (Spitz...

متن کامل

Young stellar clusters and H 2 nebulosities in S 233 IR ? , ? ?

We present an infrared photometric study of the star formation region associated to IRAS 05358+3543, hereafter designated S233IR. Several manifestations of star formation activity are present in S233IR: masers, molecular outflow, GMC core, YSOs, young stellar clusters and an IRAS source. The paper includes photometric J, H, K and H2 (2.12 μm) images and scanning Fabry-Perot observations to stud...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010