Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...200l.111m&link_type=abstract
Astrophysical Journal, vol. 200, Sept. 1, 1975, pt. 2, p. L111-L114.
Astronomy and Astrophysics
Astronomy
24
Hydroxyl Emission, Interstellar Masers, Interstellar Matter, Microwave Spectra, Molecular Spectra, Water Vapor, Electron Transitions, Emission Spectra, Line Spectra, Maser Outputs, Radio Sources (Astronomy)
Scientific paper
The relative positions of the OH and H2O masers in W49N and W3(OH) have been found by simultaneously observing both masering transitions with a very-long-baseline interferometer. In both sources, the OH and H2O features are clearly separated and occupy two distinct regions of space, separated by 48,000 AU and 18,000 AU in W49N and W3(OH), respectively. The two masering regions appear unlikely to have the same source of excitation.
Johnston Ken J.
Knowles Stephen H.
Mader Gerald L.
Mango Stephen A.
Moran James Michael
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