A search for Class 0 protostars in Corona Australis

Jorma Harju
Observatory, University of Helsinki

Jim Higdon
Kapteyn Institute, University of Groningen

Kimmo Lehtinen, Mika Juvela
Observatory, University of Helsinki

The R Coronae Australis core was imaged with the Australia Telescope Compact Array (ATCA) in continuum at 3 and 6 cm. The aim was to investigate if any of the quiescent DCO+ clumps detected recently (Anderson et al. 1999) contain compact HII regions. Such a source in a dense clump without associated infrared emission may indicate the presence of a very young protostar. No continuum sources, except those previously detected with the VLA (Brown 1987) were found. In particular, no trace was found of the compact radio continuum source in the southern part of the core reported on by Brown & Zuckerman (1975). The properties of the detected continuum sources, their infrared counterparts and their relation to the surrounding molecular material are discussed.

Anderson I.M., Caselli P., Haikala L.K., Harju J. 1999, A&A 347, 983
Brown A. 1987, ApJ 322, L31
Brown R.L., Zuckerman B. 1975, ApJ 202, L125


Abstract submitted for Science with the Atacama Large Millimeter Array, 6 - 8 October 1999, Washington, D.C.