The Spitzer c2d survey of large, nearby, interstellar clouds. VIII. Serpens observed with MIPS

Harvey, Paul M. and Rebull, Luisa M. and Brooke, Tim and Spiesman, William J. and Chapman, Nicholas and Huard, Tracy L. and Evans, Neal J. and Cieza, Lucas and Lai, Shih-Ping and Allen, Lori E. and Mundy, Lee G. and Padgett, Deborah L. and Sargent, Anneila I. and Stapelfeldt, Karl R. and Myers, Philip C. and van Dishoeck, Ewine F. and Blake, Geoffrey A. and Koerner, David W. (2007) The Spitzer c2d survey of large, nearby, interstellar clouds. VIII. Serpens observed with MIPS. Astrophysical Journal, 663 (2). pp. 1139-1148. ISSN 1538-4357

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Abstract

We present maps of 1.5 deg2 of the Serpens dark cloud at 24, 70, and 160 μm observed with the Spitzer Space Telescope MIPS camera. We describe the observations and briefly discuss the data processing carried out by the c2d team on these data. More than 2400 compact sources have been extracted at 24 μm, nearly 100 at 70 μm, and four at 160 μm. We estimate completeness limits for our 24 μm survey from Monte Carlo tests with artificial sources inserted into the Spitzer maps. We compare source counts, colors, and magnitudes in the Serpens cloud to two reference data sets: a 0.50 deg 2 set on a low-extinction region near the dark cloud, and a 5.3 deg2 subset of the SWIRE ELAIS N1 data that was processed through our pipeline. These results show that there is an easily identifiable population of young stellar object candidates in the Serpens cloud that is not present in either of the reference data sets. We also show a comparison of visual extinction and cool dust emission illustrating a close correlation between the two and find that the most embedded YSO candidates are located in the areas of highest visual extinction.

Item Type:	Article
Publisher’s Statement:	© 2007. The American Astronomical Society. Published by IOP Publishing.
ID number or DOI:	10.1086/518647
Keywords:	Continuum; core; infrared : general; irac; molecular cloud; perseus; program; sky; 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 17:28
URI:	http://openknowledge.nau.edu/id/eprint/399

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