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Published January 10, 2008 | Published
Journal Article Open

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. VII. Ophiuchus Observed with MIPS

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 μm and 81 sources at 70 μm at the 10 σ level of significance. Three hundred twenty-three candidate young stellar objects (YSOs) were identified according to their positions on the MIPS/2MASS K versus color-magnitude diagrams, as compared to 24 μm 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.

Additional Information

© 2008. The American Astronomical Society. Received 2007 January 10; accepted 2007 September 18. Most of the support for this work, part of the Spitzer Space Telescope Legacy Science Program, was provided by NASA through contracts 1224608, 1230782, and 1230779, issued by the Jet Propulsion Laboratory, California Institute of Technology, under NASA contract 1407. We thank the Lorentz Center in Leiden for hosting several meetings that contributed to this paper. Support for J. K. J. and P. C. M. was provided in part by a NASA Origins grant, NAG5-13050. Astrochemistry in Leiden is supported by a NWO Spinoza grant and a NOVA grant. K. E. Y. was supported by NASA under grant NGT5-50401 issued through the Office of Space Science. This research has made use of NASA's Astrophysics Data System (ADS) Abstract Service, and of the SIMBAD database, operated at CDS, Strasbourg, France. This research has made use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation. These data were served by the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. The research described in this paper was partially carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

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August 22, 2023
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