We perform deep 1.8 cm radio continuum imaging towards thirteen protostellar regions selected from the Spitzer c2d small clouds and cores programme at high resolution (25") in order to detect and quantify the cm-wave emission from deeply embedded young protostars. Within these regions we detect fifteen 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, L_rad -L_bol, for the sample and discuss the nature of the radio emission in terms of the available sources of ionized gas. We also investigate the L_rad-L_IR correlation and suggest that radio flux density may be used as a proxy for the internal luminosity of low luminosity protostars.
@article{arxiv.1009.0348,
title = {AMI Large Array radio continuum observations of Spitzer c2d small clouds and cores},
author = {Anna M. M. Scaife and Emily I. Curtis and Matthew Davies and Thomas M. O. Franzen and Keith J. B. Grainge and Michael P. Hobson and Natasha Hurley-Walker and Anthony N. Lasenby and Malak Olamaie and Guy G. Pooley and Carmen Rodríguez-Gonzálvez and Richard D. E. Saunders and Michel Schammel and Paul F. Scott and Timothy Shimwell and David Titterington and Elizabeth Waldram and Jonathan T. L. Zwart},
journal= {arXiv preprint arXiv:1009.0348},
year = {2015}
}