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Science 10 October 1969:
Vol. 166. no. 3902, pp. 221 - 224
DOI: 10.1126/science.166.3902.221
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Articles

Galactic Water Vapor Emission: Further Observations of Variability

S. H. Knowles 1, C. H. Mayer 1, W. T. Sullivan III 1, and A. C. Cheung 2

1 E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20390
2 Department of Physics, University of California. Berkeley 94720

Recent observations of the 1.35-centimeter line emission of water vapor from galactic sources show short-term variability in the spectra of several sources. Two additional sources, Cygnus 1 and NGC 6334N, have been observed, and the spectra of W49 and VY Canis Majoris were measured over a wider range of radial velocity.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)