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SCUBA Observations of Pre-Stellar Cores

Published online by Cambridge University Press:  25 September 2002

M. Giard ,
J.P. Bernard ,
A. Klotz ,
I. Ristorcelli ,
J. M. Kirk ,
D. Ward-Thompson  and
P. André
J. M. Kirk
Affiliation:
Department of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff, UK
D. Ward-Thompson
Affiliation:
Department of Physics and Astronomy, Cardiff University, 5 The Parade, Cardiff, UK
P. André
Affiliation:
CEA, DAPNIA, Service d'Astrophysique, CE Saclay, 91191 Gif-sur-Yvette, France
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Abstract

Pre-stellar cores are defined to be the stage of star formation that preceeds the formation of a hydro-static protostar. We haveobserved a number of cores believed to be pre-stellar in nature in the submillimetre continuum with SCUBA on the JCMT.37 cores were detected at 850 μm - 13 of them with high signal-to-noise. Radial density profiles of these 13 show flattened inner regions and sharp boundaries consistent with some models of the pre-collapse phase of protostar formation.Simple models are fitted to the core radial density profiles to assess their stability against collapse.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 4: Infrared and Submillimeter Space Astronomy: An International Colloquium to Honor the Memory of Guy Serra , 2002 , pp. 321
Copyright
© EAS, EDP Sciences, 2002

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