The herschel and jcmt gould belt surveys: Constraining dust properties in the perseus B1 clump with PACS, SPIRE, and SCUBA-2

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DOIResolve DOI: http://doi.org/10.1088/0004-637X/767/2/126
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TypeArticle
Journal titleThe Astrophysical Journal
ISSN0004-637X
Volume767
Issue2
Article number126
AbstractWe present Herschel observations from the Herschel Gould Belt Survey and SCUBA-2 science verification observations from the JCMT Gould Belt Survey of the B1 clump in the Perseus molecular cloud. We determined the dust emissivity index using four different techniques to combine the Herschel PACS+SPIRE data at 160-500 μm with the SCUBA-2 data at 450 μm and 850 μm. Of our four techniques, we found that the most robust method was filtering out the large-scale emission in the Herschel bands to match the spatial scales recovered by the SCUBA-2 reduction pipeline. Using this method, we find β 2 toward the filament region and moderately dense material and lower β values (β ≳ 1.6) toward the dense protostellar cores, possibly due to dust grain growth. We find that β and temperature are more robust with the inclusion of the SCUBA-2 data, improving estimates from Herschel data alone by factors of 2 for β and by 40% for temperature. Furthermore, we find core mass differences of ≲ 30% compared to Herschel-only estimates with an adopted β = 2, highlighting the necessity of long-wavelength submillimeter data for deriving accurate masses of prestellar and protostellar cores. © 2013. The American Astronomical Society. All rights reserved.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21270692
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Record identifier15fa4d2c-7da2-4d05-b0a8-01df87fa9c92
Record created2014-02-17
Record modified2016-07-18
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