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Comparison of CO and IR Emission of IRAS Unidentified Sources

Published online by Cambridge University Press:  04 August 2017

F. Boulanger ,
F. Casoli ,
F. Combes ,
Ch. Dupraz  and
M. Gérin
F. Boulanger*
Affiliation:
Laboratoire de Radioastronomie de l'Ecole Normale Supérieure, Paris, France
F. Casoli
Affiliation:
Laboratoire de Radioastronomie de l'Ecole Normale Supérieure, Paris, France
F. Combes
Affiliation:
Laboratoire de Radioastronomie de l'Ecole Normale Supérieure, Paris, France
Ch. Dupraz
Affiliation:
Laboratoire de Radioastronomie de l'Ecole Normale Supérieure, Paris, France
M. Gérin
Affiliation:
Laboratoire de Radioastronomie de l'Ecole Normale Supérieure, Paris, France
*
Now at Goddard Institute for Space Studies, New York.

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IR observations with the IRAS satellite have revealed in the galaxy a lot of point-like unidentified sources: they have no optical or radiocontinuum counterpart, and cannot be known stars, nor H II regions. We have undertaken mm-wave observations of a sample of ∼ 100 of these sources with the Bordeaux telescope (beamsize = 4.4′ ∼ IRAS resolution). These sources seem to be associated with protostars or young stars still embedded in molecular clouds. Some of the sources present high-velocity wings, suggesting a bipolar gaseous ejection from the protostar.

Type
I. Star Forming Processes in the Solar Neighborhood
Information
Symposium - International Astronomical Union , Volume 115: Star Forming Regions , 1987 , pp. 86 - 87
Copyright
Copyright © Reidel 1987