Class 0 protostars in the Perseus molecular cloud: A correlation between the youngest protostars and the dense gas distribution

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DOIResolve DOI: http://doi.org/10.1088/2041-8205/787/2/L18
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TypeArticle
Journal titleThe Astrophysical Journal Letters
ISSN2041-8205
Volume787
Issue2
Article numberL18
Pages16; # of pages: 6
Subjectdust, extinction; ISM: individual objects (Perseus); stars: formation; stars: protostars
AbstractWe use PACS and SPIRE continuum data at 160 μm, 250 μm, 350 μm, and 500 μm from the Herschel Gould Belt Survey to sample seven clumps in Perseus: B1, B1-E, B5, IC 348, L1448, L1455, and NGC 1333. Additionally, we identify and characterize the embedded Class 0 protostars using detections of compact Herschel sources at 70 μm as well as archival Spitzer catalogs and SCUBA 850 μm photometric data. We identify 28 candidate Class 0 protostars, four of which are newly discovered sources not identified with Spitzer. We find that the star formation efficiency of clumps, as traced by Class 0 protostars, correlates strongly with the flatness of their respective column density distributions at high values. This correlation suggests that the fraction of high column density material in a clump reflects only its youngest protostellar population rather than its entire source population. We propose that feedback from either the formation or evolution of protostars changes the local density structure of clumps.
Publication date
LanguageEnglish
AffiliationNational Science Infrastructure; National Research Council Canada
Peer reviewedYes
NPARC number21272886
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Record identifierc4ae70c7-8daa-4411-a8c7-8ebca600b01e
Record created2014-12-03
Record modified2016-07-18
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