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The nature of the radio source Cygnus X

Published online by Cambridge University Press:  14 August 2015

F. D. Drake
F. D. Drake*
Affiliation:
National Radio Astronomy Observatory Green Bank, West Virginia, U.S.A.

Extract

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The radio source Cygnus X (IAU 20N4A) has long created interest because of its unusual spectrum, its seemingly extended nature, and its location in a region where we believe we look nearly lengthwise down a spiral arm of the Galaxy. Piddington and Minnett [1] first showed that the source had a thermal spectrum. In a recent paper Davies [2] has concluded that the source is an extremely large extended HII region located in the second spiral arm in Cygnus. The recent construction of large parabolic antennas has made it possible to clarify greatly the nature of Cygnus X; it is the purpose of this paper to give the results of a high-resolution survey of the Cygnus X region, and to report a possibly relevant optical observation.

Type
Part III: Galactic and Extragalactic Radio Sources
Information
Symposium - International Astronomical Union , Volume 9: Paris Symposium on Radio Astronomy , 1959 , pp. 339 - 346
Copyright
Copyright © Stanford University Press 1959 

References

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