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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., Andre, Ph., Pezzuto, S., Bernard, J. -P., Maury, A., Men'shchikov, A., Motte, F., Nguyen-Lu'o'ng, Q., Schneider, N., Arzoumanian, D., Benedettini, M., Bontemps, S., Elia, D., Hennemann, M., Hill, T., Koenyves, V., Louvet, F., Peretto, Nicolas, 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) , L18. 10.1088/2041-8205/787/2/L18

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Abstract

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: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Publisher: Institute of Physics
ISSN: 2041-8205
Date of First Compliant Deposit: 16 November 2016
Date of Acceptance: 25 April 2014
Last Modified: 29 Jun 2019 04:05
URI: http://orca-mwe.cf.ac.uk/id/eprint/94282

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  • Class 0 protostars in the perseus molecular cloud: a correlation between the youngest protostars and the dense gas distribution. (deposited 16 Nov 2016 17:24) [Currently Displayed]

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