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

Sadavoy, S. I.; Di Francesco, J.; André, Ph.; Pezzuto, S.; Bernard, J.-P.; Maury, A.; Men'shchikov, A.; Motte, F.; Nguyễn-Lu'o'ng, Q.; Schneider, N.; Arzoumanian, D.; Benedettini, M.; Bontemps, S.; Elia, D.; Hennemann, M.; Hill, T.; Könyves, V.; Louvet, F.; Peretto, N.; Roy, A. and White, G. J. (2014). Class 0 protostars in the Perseus molecular cloud: a correlation between the youngest protostars and the dense gas distribution. Astrophysical Journal Letters, 787(2), article no. L18.

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We 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.

Item Type: Journal Item
Copyright Holders: 2014 The American Astronomical Society
ISSN: 2041-8213
Project Funding Details:
Funded Project NameProject IDFunding Body
FP7/2007-2013 ERC291294European Union
Extra Information: 6 pp.
Keywords: stellar dust; extinction; star formation; protostars
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 40287
Depositing User: G. J. White
Date Deposited: 02 Jun 2014 08:15
Last Modified: 10 Dec 2018 01:58
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