MAMBO Mapping of Spitzer c2d Small Clouds and Cores
Jens Kauffmann (1,2,3), Frank Bertoldi (4), Tyler L. Bourke (3), Neal, J. Evans II (5), Chang Won Lee (3,6) ((1) Max-Planck-Institut fuer, Radioastronomie, Bonn, Germany, (2) Initiative in Innovative Computing at, Harvard University

TL;DR
This study uses sensitive 1.2 mm dust emission maps combined with infrared data to analyze the structure and evolution of dense cores in nearby star-forming regions, challenging existing models of core evolution.
Contribution
It provides detailed structural characterization of dense cores and embedded stars, and questions the traditional evolutionary sequence based on core properties.
Findings
Starless and star-forming cores share similar properties.
Dense core evolution may not be solely determined by mass or density.
Inconsistencies found in evolutionary indicators for young stellar objects.
Abstract
AIMS: To study the structure of nearby (< 500 pc) dense starless and star-forming cores with the particular goal to identify and understand evolutionary trends in core properties, and to explore the nature of Very Low Luminosity Objects (< 0.1 L_sun; VeLLOs). METHODS: Using the MAMBO bolometer array, we create maps unusually sensitive to faint (few mJy per beam) extended (approx. 5 arcmin) thermal dust continuum emission at 1.2 mm wavelength. Complementary information on embedded stars is obtained from Spitzer, IRAS, and 2MASS. RESULTS: Our maps are very rich in structure, and we characterize extended emission features (``subcores'') and compact intensity peaks in our data separately to pay attention to this complexity. We derive, e.g., sizes, masses, and aspect ratios for the subcores, as well as column densities and related properties for the peaks. Combination with archival infrared…
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