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Title:
Observations at 90 and 142 GHz of nine extended galactic radio sources
Authors:
Salter, C. J.; Emerson, D. T.; Steppe, H.; Thum, C.
Affiliation:
AA(Instituto de Radioastronomia Milimetrica, Granada, Spain), AB(National Radio Astronomy Observatory, Tucson, AZ), AC(Instituto de Radioastronomia Milimetrica, Granada, Spain), AD(Instituto de Radioastronomia Milimetrica, Granada, Spain)
Publication:
Astronomy and Astrophysics (ISSN 0004-6361), vol. 225, no. 1, Nov. 1989, p. 167-178. (A&A Homepage)
Publication Date:
11/1989
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
CONTINUOUS RADIATION, GALACTIC RADIO WAVES, H II REGIONS, INTERSTELLAR MATTER, RADIO SOURCES (ASTRONOMY), ASTRONOMICAL MAPS, RADIO ASTRONOMY, RADIO TELESCOPES
Bibliographic Code:
1989A&A...225..167S

Abstract

The paper presents 90 and 142 GHz continuum maps with resolutions of about 28 and 20 arcsecs, respectively, of nine extended Galactic radio sources. High-frequency excesses, believed to be due predominantly to thermal emission from dust, were found in Orion A, W 3 Main, W 49 A, and W 51 A. For the SNR, G 21.5-0.9, the existence of a spectral break around 40 GHz is confirmed.

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