Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21111605f&link_type=abstract
American Astronomical Society, AAS Meeting #211, #116.05; Bulletin of the American Astronomical Society, Vol. 39, p.945
Astronomy and Astrophysics
Astronomy
Scientific paper
We present sub-mm observations of the northern streamer region of IC 5146. These observations were carried out during the 2005 flight of the Balloon-borne Large-Aperture Sub-millimeter Telescope (BLAST). The data are broadband images centered on 250, 350, and 500 microns. We combine the BLAST images with archival IRAS and Spitzer-MIPS observations to determine the spectral energy distributions (SEDs) of several point-like and diffuse sources in IC 5146. The SEDs reveal dust temperatures ranging from 10 K for diffuse structures to 20 K for regions containing IRAS point sources and/or known protostars. We also present a preliminary analysis showing a correlation between the coldest diffuse regions with optical and near/mid-IR extinction, providing evidence that the coldest regions in IC 5146 are infrared dark clouds.
Blast Collaboration
France Kevin
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