AMI Large Array radio continuum observations of Spitzer c2d small clouds and cores

Details AMI Large Array radio continuum observations of Spitzer c2d small clouds and cores AMI Large Array radio continuum observations of Spitzer c2d small clouds and cores

2010-09-02

arxiv.org/abs/1009.0348v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

submitted MNRAS

Scientific paper

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.

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