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The Spitzer c2d survey of large, nearby, interstellar clouds. I. Chamaeleon II observed with MIPS

Young, Kaisa E. and Harvey, Paul M. and Brooke, Timothy Y. and Chapman, Nicholas and Kauffmann, Jens and Bertoldi, Frank and Lai, Shih-Ping and Alcala, Juan and Bourke, Tyler L. and Spiesman, William and Allen, Lori E. and Blake, Geoffrey A. and Evans, Neal J. and Koerner, David W. and Mundy, Lee G. and Myers, Philip C. and Padgett, Deborah L. and Salinas, Anandi and Sargent, Anneila I. and Stapelfeldt, Karl R. and Teuben, Peter and van Dishoeck, Ewine F. and Wahhaj, Zahed (2005) The Spitzer c2d survey of large, nearby, interstellar clouds. I. Chamaeleon II observed with MIPS. Astrophysical Journal, 628 (1). pp. 283-297. ISSN 1538-4357


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We present maps of over 1.5 deg2 in Chamaeleon (Cha) II at 24, 70, and 160 μm observed with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) and a 1.2 deg2 millimeter map from SIMBA on the Swedish-ESO Submillimetre Telescope (SEST). The c2d Spitzer Legacy Team's data reduction pipeline is described in detail. Over 1500 24 μm sources and 41 70 μm sources were detected by MIPS with fluxes greater than 10 σ. More than 40 potential YSOs are identified with a MIPS and 2MASS color-color diagram and by their spectral indices, including two previously unknown sources with 24 μm excesses. Our new SIMBA millimeter map of Cha II shows that only a small fraction of the gas is in compact structures with high column densities. The extended emission seen by MIPS is compared with previous CO observations. Some selected interesting sources, including two detected at 1 mm, associated with Cha II are discussed in detail, and their SEDs are presented. The classification of these sources using MIPS data is found to be consistent with that of previous studies.

Item Type: Article
Publisher’s Statement: © 2005 The American Astronomical Society. Published by IOP Publishing.
ID number or DOI: 10.1086/430597
Keywords: cores; dark-cloud; dust; hh 54; infrared : stars; ISM : clouds; main-sequence stars; molecular clouds; multiband imaging photometer; reduction algorithms; stars : formation; t-tauri; young stellar objects
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 19:00
URI: http://openknowledge.nau.edu/id/eprint/448

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