Comparing Star Formation on Large Scales in the c2d Legacy Clouds: Bolocam 1.1 mm Dust Continuum Surveys of Serpens, Perseus, and Ophiuchus

Abstract

We have undertaken an unprecedentedly large 1.1 millimeter continuum survey of three nearby star forming clouds using Bolocam at the Caltech Submillimeter Observatory. We mapped the largest areas in each cloud at millimeter or submillimeter wavelengths to date: 7.5 sq. deg in Perseus (Paper I), 10.8 sq. deg in Ophiuchus (Paper II), and 1.5 sq. deg in Serpens with a resolution of 31", detecting 122, 44, and 35 cores, respectively. Here we report on results of the Serpens survey and compare the three clouds. Average measured angular core sizes and their dependence on resolution suggest that many of the observed sources are consistent with power-law density profiles. Tests of the effects of cloud distance reveal that linear resolution strongly affects measured source sizes and densities, but not the shape of the mass distribution. Core mass distribution slopes in Perseus and Ophiuchus (alpha=2.1+/-0.1 and alpha=2.1+/-0.3) are consistent with recent measurements of the stellar IMF, whereas the Serpens distribution is flatter (alpha=1.6+/-0.2). We also compare the relative mass distribution shapes to predictions from turbulent fragmentation simulations. Dense cores constitute less than 10% of the total cloud mass in all three clouds, consistent with other measurements of low star-formation efficiencies. Furthermore, most cores are found at high column densities; more than 75% of 1.1 mm cores are associated with Av>8 mag in Perseus, 15 mag in Serpens, and 20-23 mag in Ophiuchus.

arXiv comment32 pages, including 18 figures, accepted for publication in ApJ

References in corpus (23)

• Galactic Stellar and Substellar Initial Mass Function
• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• Control of star formation by supersonic turbulence
• The Stellar IMF from Turbulent Fragmentation
• Physical Conditions in Regions of Star Formation
• From Molecular Cores to Planet-forming Disks: A SIRTF Legacy Program
• Tracing the Mass during Low-Mass Star Formation. II. Modelling the Submillimeter Emission from Pre-Protostellar Cores
• Star formation in clusters: a survey of compact mm-wave sources in the Serpens core
• Bolocam Survey for 1.1 mm Dust Continuum Emission in the c2d Legacy Clouds. I. Perseus
• The COMPLETE Survey of Star-Forming Regions: Phase I Data
• Bolocam Survey for 1.1 mm Dust Continuum Emission in the c2d Legacy Clouds. II. Ophiuchus
• The initial conditions of isolated star formation - VI. SCUBA mapping of prestellar cores
• The Large and Small Scale Structures of Dust in the Star-Forming Perseus Molecular Cloud
• An Extinction Threshold for Protostellar Cores in Ophiuchus
• Tracing the Mass during Low-Mass Star Formation. III. Models of the Submillimeter Dust Continuum Emission from Class 0 Protostars
• An unbiased search for the signatures of protostars in the rho Ophiuchi Molecular Cloud. II. Millimetre continuum observations
• Tracing the Mass during Low-Mass Star Formation, IV: Observations and Modeling of the Submillimeter Continuum Emission from Class I Protostars
• The Bolocam Lockman Hole Millimeter-Wave Galaxy Survey: Galaxy Candidates and Number Counts
• The Mass Spectra of Cores in Turbulent Molecular Clouds and Implications for the Initial Mass Function
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds VIII. Serpens Observed with MIPS
• The Spectral Correlation Function of Molecular Clouds: A Statistical Test for Theoretical Models
• A multi-wavelength census of star formation activity in the young embedded cluster around Serpens/G3-G6
• Galactic archaeology: IMF and depletion in the "thin disk"

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