Journal Article

AMI-LA radio continuum observations of <i>Spitzer</i> c2d small clouds and cores: Perseus region*

Anna M. M. Scaife, Jennifer Hatchell, Matthew Davies, Thomas M. O. Franzen, Keith J. B. Grainge, Michael P. Hobson, Natasha Hurley-Walker, Anthony N. Lasenby, Malak Olamaie, Yvette C. Perrott, Guy G. Pooley, Carmen Rodríguez-Gonzálvez, Richard D. E. Saunders, Michel P. Schammel, Paul F. Scott, Timothy Shimwell, David Titterington and Elizabeth Waldram

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 415, issue 1, pages 893-910
Published in print July 2011 | ISSN: 0035-8711
Published online July 2011 | e-ISSN: 1365-2966 | DOI:
AMI-LA radio continuum observations of Spitzer c2d small clouds and cores: Perseus region*

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We present deep radio continuum observations of the cores identified as deeply embedded young stellar objects in the Perseus molecular cloud by the Spitzer c2d programme at a wavelength of 1.8 cm with the Arcminute Microkelvin Imager Large Array (AMI-LA). We detect 72 per cent of Class 0 objects from this sample and 31 per cent of Class I objects. No starless cores are detected. We use the flux densities measured from these data to improve constraints on the correlations between radio luminosity and bolometric luminosity, infrared luminosity and, where measured, outflow force. We discuss the differing behaviour of these objects as a function of protostellar class and investigate the differences in radio emission as a function of core mass. Two of four possible very low luminosity objects (VeLLOs) are detected at 1.8 cm.

Keywords: radiation mechanisms: general; stars: formation; ISM: clouds; ISM: general

Journal Article.  10148 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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