The Initial Configuration of Young Stellar Clusters: A K-band Number Counts Analysis of the Surface Density of Stars

Abstract

We present an analysis of K-band stellar distributions for the young stellar clusters GGD 12-15, IRAS 20050+2720, and NGC 7129. We find that the two deeply embedded clusters, GGD 12-15 and IRAS 20050+2720, are not azimuthally symmetric and show a high degree of structure which traces filamentary structure observed in 850 micron emission maps. In contrast, the NGC 7129 cluster is circularly symmetric, less dense, and anti-correlated to 850 micron emission, suggesting recent gas expulsion and dynamical expansion have occured. We estimate stellar volume densities from nearest neighbor distances, and discuss the impact of these densities on the evolution of circumstellar disks and protostellar envelopes in these regions.

44 pages, 26 figures, Accepted to ApJ. Changes include extinction mapping, Monte Carlo field star modeling, and Nyquist sampled azimuthal stellar distributions. A version with full resolution figures is available at http://astro.pas.rochester.edu/~rguter/preprints/gutermuth_sd.tar.gz

References in corpus (28)

• Embedded Clusters in Molecular Clouds
• The Formation of a Star Cluster: Predicting the Properties of Stars and Brown Dwarfs
• A Census of the Young Cluster IC 348
• The hierarchical formation of a stellar cluster
• Gravitational Collapse in Turbulent Molecular Clouds. I. Gasdynamical Turbulence
• The Luminosity & Mass Function of the Trapezium Cluster: From B stars to the Deuterium Burning Limit
• 2MASS Observations of the Perseus, Orion A, Orion B, and Monoceros R2 Molecular Clouds
• Mapping the interstellar dust with near-infrared observations: An optimized multi-band technique
• The Formation of Stellar Clusters: Gaussian Cloud Conditions I
• The Truncated Disk of CoKu Tau/4
• Discovery of a candidate inner Oort cloud planetoid
• Initial Results from The Spitzer Young Stellar Cluster Survey
• A Catalog of Young Stellar Groups and Clusters Within 1kpc of the Sun
• Modes of Multiple Star Formation
• The Formation of Self-Gravitating Cores in Turbulent Magnetized Clouds
• Dispersion in the lifetime and accretion rate of T Tauri discs
• Analysis of Clumps in Molecular Cloud Models: Mass Spectrum, Shapes, Alignment and Rotation
• Mid-Infrared Spectroscopy of Disks around Classical T Tauri Stars
• Binary stars in young clusters: models versus observations of the Trapezium Cluster
• The NGC 7129 Young Stellar Cluster: A Combined Spitzer, MMT, and 2MASS Census of Disks, Protostars, and Outflows
• A 13CO and C18O Survey of the Molecular Gas Around Young Stellar Clusters Within 1kpc of the Sun
• A GLIMPSE of Star Formation in the Giant H II Region RCW 49
• The 24-Micron View of Embedded Star Formation in NGC 7129
• Numerical simulations of protostellar encounters I. Star-disc encounters
• Parameter Study of Star-Discs Encounters
• Removing sky contributions from SCUBA data
• The structure of young star clusters
• A Submillimeter Study of the Star-Forming Region NGC7129

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