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The Spitzer c2d survey of nearby dense cores. IV. Revealing the embedded cluster in B59

Brooke, Timothy Y. and Huard, Tracy L. and Bourke, Tyler L. and Boogert, A. C. Adwin and Allen, Lori E. and Blake, Geoffrey A. and Evans, Neal J. and Harvey, Paul M. and Koerner, David W. and Mundy, Lee G. and Myers, Philip C. and Padgett, Deborah L. and Sargent, Anneila I. and Stapelfeldt, Karl R. and van Dishoeck, Ewine F. and Chapman, Nicholas and Cieza, Lucas and Dunham, Michael M. and Lai, Shih-Ping and Porras, Alicia and Spiesman, William and Teuben, Peter J. and Young, Chadwick H. and Wahhaj, Zahed and Lee, Chang Won (2007) The Spitzer c2d survey of nearby dense cores. IV. Revealing the embedded cluster in B59. Astrophysical Journal, 655 (1). pp. 364-374. ISSN 1538-4357


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Publisher’s or external URL: http://dx.doi.org/10.1086/510115


Infrared images of the dark cloud core B59 were obtained with the Spitzer Space Telescope as part of the "Cores to Disks" Legacy Science project. Photometry from 3.6-70 μm indicates at least 20 candidate low-mass young stars near the core, more than doubling the previously known population. Out of this group, 13 are located within ~0.1 pc in projection of the molecular gas peak, where a new embedded source is detected. Spectral energy distributions span the range from small excesses above photospheric levels to rising in the mid-infrared. One other embedded object, probably associated with the millimeter source B59-MMS1, with a bolometric luminosity L-bol ~ 2L☉, has extended structure at 3.6 and 4.5 μm, possibly tracing the edges of an outflow cavity. The measured extinction through the central part of the core is A(V) > or ~ 45 mag. The B59 core is producing young stars with a high efficiency.

Item Type: Article
ID number or DOI: 10.1086/510115
Keywords: auriga molecular cloud; dark cloud; Evolution; infrared : ISM; infrared : stars; interstellar extinction; ISM : clouds; main-sequence stars; ophiuchi; pipe nebula; source counts; space-telescope; stars : pre-main sequence; young stellar population
Subjects: Q Science > QB Astronomy
NAU Depositing Author Academic Status: Faculty/Staff
Department/Unit: College of Engineering, Forestry, and Natural Science > Physics and Astronomy
Date Deposited: 30 Sep 2015 04:42
URI: http://openknowledge.nau.edu/id/eprint/93

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