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A CO Survey of the Southern Galactic Plane

Published online by Cambridge University Press:  25 April 2016

W. H. McCutcheon ,
B. J. Robinson  and
J. B. Whiteoak
W. H. McCutcheon
Affiliation:
Division of Radiophysics, CSIRO, Sydney
B. J. Robinson
Affiliation:
Division of Radiophysics, CSIRO, Sydney
J. B. Whiteoak
Affiliation:
Division of Radiophysics, CSIRO, Sydney
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Extract

Millimetre-wave emission from the CO molecule has proven to be an extremely useful probe of the cold, dense clouds of molecular hydrogen in the Galaxy. Previous studies of the large-scale distribution of CO in the galactic plane (Scoville and Solomon 1975; Burton et al. 1975; Bash and Peters 1976; Burton and Gordon 1978; Solomon et al. 1979b; Cohen et al. 1980) have all been of the northern hemisphere and primarily at longitudes 0° ≤ l ≥ 80°. These studies have revealed the striking characteristic that the CO, and by implication molecular hydrogen clouds, are concentrated in a ring extending from 4 to 8 kpc from the galactic centre. This is in sharp contrast to the atomic hydrogen distribution, which is fairly constant over the extended region from 4 to 13 kpc but correlates well with other Population I indicators.

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Contributions
Information
Publications of the Astronomical Society of Australia , Volume 4 , Issue 2 , 1981 , pp. 243 - 247
Copyright
Copyright © Astronomical Society of Australia 1981

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