Journal Article

AMI Large Array radio continuum observations of <i>Spitzer</i> c2d small clouds and cores*

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

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 410, issue 4, pages 2662-2678
Published in print February 2011 | ISSN: 0035-8711
Published online January 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2010.17644.x
AMI Large Array radio continuum observations of Spitzer c2d small clouds and cores*

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We perform deep 1.8-cm radio continuum imaging towards 13 protostellar regions selected from the Spitzer c2d small clouds and cores programme at high resolution (25 arcsec) in order to detect and quantify the cm-wave emission from deeply embedded young protostars. Within these regions we detect 15 compact radio sources which we identify as radio protostars including two probable new detections. The sample is in general of low bolometric luminosity and contains several of the newly detected VeLLO sources. We determine the 1.8-cm radio luminosity to bolometric luminosity correlation, LradLbol, for the sample and discuss the nature of the radio emission in terms of the available sources of ionized gas. We also investigate the LradLIR correlation and suggest that radio flux density may be used as a proxy for the internal luminosity of low-luminosity protostars.

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

Journal Article.  11963 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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