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Molecular Line Observations of the Galactic Center Region

Published online by Cambridge University Press:  23 September 2016

A. A. Stark ,
J. Bally ,
R. W. Wilson  and
M. W. Pound
A. A. Stark
Affiliation:
AT&T Bell Laboratories Crawford Hill Laboratory; Holmdel, NJ 07733
J. Bally
Affiliation:
AT&T Bell Laboratories Crawford Hill Laboratory; Holmdel, NJ 07733
R. W. Wilson
Affiliation:
AT&T Bell Laboratories Crawford Hill Laboratory; Holmdel, NJ 07733
M. W. Pound
Affiliation:
AT&T Bell Laboratories Crawford Hill Laboratory; Holmdel, NJ 07733

Abstract

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A decade of galactic center observations at the Crawford Hill 7 m antenna is summarized. The galactic center region contains several hundred high-mass, high-density molecular clouds with physical properties very different from clouds in the outer galactic disk. There is also a considerable amount of molecular gas not bound into clouds, but sheared by differential rotation into a molecular inter-cloud medium not seen elsewhere in the Galaxy. These observations can be explained by a combination of the tidal density limit and the virial theorem. The distribution of emission on the sky and in velocity suggests that most of the dense gas is confined to a 500 pc long ridge of emission which may be a dust lane along the central bar.

Type
The Large - Scale Interstellar Medium
Information
Symposium - International Astronomical Union , Volume 136: The Galactic Center , 1989 , pp. 129 - 133
Copyright
Copyright © Kluwer 1989 

References

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