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Molecular-cloud clusters and chains

Published online by Cambridge University Press:  04 August 2017

D. B. Sanders ,
D. P. Clemens ,
N. Z. Scoville  and
P. M. Solomon
D. B. Sanders
Affiliation:
Five College Radio Astronomy Observatory University of Massachusetts, Amherst, MA
D. P. Clemens
Affiliation:
Five College Radio Astronomy Observatory University of Massachusetts, Amherst, MA
N. Z. Scoville
Affiliation:
Five College Radio Astronomy Observatory University of Massachusetts, Amherst, MA
P. M. Solomon
Affiliation:
Astronomy Program State Univ. of New York, Stony Brook, N.Y.

Extract

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We report some preliminary results from the Massachusetts - Stony Brook CO survey of the first galactic quadrant using the 14-meter millimeterwave telescope of the Five College Radio Astronomy Observatory. The survey contains approximately 50 000 observations spaced every 3 arcminutes in 1 and b between longitudes 0° and 90° and latitudes −1° and 1°. We have mapped emission from giant molecular clouds (GMC) which we identified, in earlier more limited strip surveys of the galactic plane (Solomon, Sanders and Scoville 1979; Sanders 1981), on size scales from a few parsecs to hundreds of parsecs, in order to determine the degree of clustering and organization into large-scale features. In addition to the characteristic size of 20 – 60 pc for individual GMC, we find clustering of clouds on a scale of from 100 to 300 pc.

Type
PART II: COMPOSITION, STRUCTURE AND KINEMATICS
Information
Symposium - International Astronomical Union , Volume 106: The Milky Way Galaxy , 1985 , pp. 329 - 330
Copyright
Copyright © Reidel 1985 

References

Jog, C. and Solomon, P.M. 1984, Astrophys. J. 276, in press Google Scholar
Sanders, D.B. 1981, Ph.D. Thesis, State University of New York at Stony Brook Google Scholar
Solomon, P.M., Sanders, D.B., and Scoville, N.Z. 1979, in “The Large-Scale Characteristics of the Galaxy”, ed. Burton, W.B. (Dordrecht: Reidel), IAU Symp. 84, pp. 35–52 CrossRefGoogle Scholar