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Radio astronomyA K-band reflected-wave ruby maser was used on the 64-meter (DSS-43) antenna at the Tidbinbilla Tracking Station, near Canberra, Australia. Spectral line observations were carried out near 22 GHz for water vapor sources and near 24 GHz for ammonia sources. The water vapor observations were made in the direction of known southern OH and H2O maser sources. All of the previously detected water line sources examined were detected. In addition, two new water vapor maser sources were discovered, G301.1+1.1and G308.9+0.1. The spectrum of G301.0+1.1 is presented six ammonia sources were found: G291.3-0.7, G305.4+0.2, G322.2+0.6, G327.3-0.5, G333.6-0.2, and G268.4-0.8. Spectra of two of these sources, G291.3-0.7 (RCW 57) and G305.4+0.2, are presented. Both show clearly the presence of the quadrupole splitting satellite lines that will allow the determination of NH3 optical depths in these clouds.
Document ID
19820003407
Document Type
Reprint (Version printed in journal)
Authors
Shaffer, R. D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mccluskey, J. T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gulkis, S.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Klein, M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kuiper, T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 10, 2013
Publication Date
October 15, 1981
Publication Information
Publication: The Telecommun. and Data Acquisition Rept.
Subject Category
Astronomy
Funding Number(s)
PROJECT: RTOP 311-03-21-00
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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