A study of molecular clouds near supernova remnants

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Clouds, Mechanical Properties, Molecules, Supernova Remnants, Electron Density (Concentration), Infrared Scanners, Kinematics, Molecular Structure

Scientific paper

Various properties of the structure and kinematics of the clouds are used to establish their physical association with well-known remnants. An infrared survey of the most massive clouds revealed embedded objects, probably stars whose formation was induced by the supernova blast wave. In order to understand the relationship between these and other molecular clouds a control group of clouds was also observed. Excitation models for dense regions of all the clouds are constructed to evaluate molecular abundances in these regions. Those clouds which have embedded stars have lower molecular abundances than the clouds which do not. A cloud near the W28 supernova remnant also has low abundances. Molecular abundances are used to measure an important parameter, the electron density.

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