The Spitzer c2d survey of large, nearby, interstellar clouds. VII. Ophiuchus observed with MIPS

Padgett, Deborah L. and Rebull, Luisa M. and Stapelfeldt, Karl R. and Chapman, Nicholas L. and Lai, Shih-Ping and Mundy, Lee G. and Evans, Neal J. and Brooke, Timothy Y. and Cieza, Lucas A. and Spiesman, William J. and Noriega-Crespo, Alberto and McCabe, Caer-Eve and Allen, Lori E. and Blake, Geoffrey A. and Harvey, Paul M. and Huard, Tracy L. and Jorgensen, Jes K. and Koerner, David W. and Myers, Philip C. and Sargent, Annelia I. and Teuben, Peter and van Dishoeck, Ewine F. and Wahhaj, Zahed and Young, Kaisa E. (2008) The Spitzer c2d survey of large, nearby, interstellar clouds. VII. Ophiuchus observed with MIPS. Astrophysical Journal, 672 (2). pp. 1013-1037. ISSN 1538-4357

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Abstract

We present maps of 14.4 deg(2) of the Ophiuchus dark clouds observed by the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer ( MIPS). These high-quality maps depict both numerous point sources and extended dust emission within the star-forming and non-star-forming portions of these clouds. Using PSF-fitting photometry, we detect 5779 sources at 24 mu m and 81 sources at 70 mu m at the 10 sigma level of significance. Three hundred twenty-three candidate young stellar objects ( YSOs) were identified according to their positions on the MIPS/2MASS K versus K - [24] color-magnitude diagrams, as compared to 24 mu m detections in the SWIRE extragalactic survey. We find that more than half of the YSO candidates, and almost all those with protostellar Class I spectral energy distributions, are confined to the known cluster and aggregates.

Item Type:	Article
Publisher’s Statement:	© 2008 The American Astronomical Society. Published by IOP Publishing.
ID number or DOI:	10.1086/523883
Keywords:	brown dwarf candidates; dark-cloud; infrared : stars; initial mass function; ISM : clouds; main-sequence stars; molecular cloud; rho-ophiuchi; space-telescope observations; spectral energy-distributions; star-forming regions; stars : formation; 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 17:42
URI:	http://openknowledge.nau.edu/id/eprint/416

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