Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...376..608g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 376, Aug. 1, 1991, p. 608-614.
Astronomy and Astrophysics
Astronomy
17
H Ii Regions, Infrared Sources (Astronomy), Interstellar Masers, Ammonia, Line Spectra, Molecular Clouds
Scientific paper
The present imaging of the NGC 7538 IRS 1-associated (N-15)H3 (J, K) = (3, 3) maser emission with 0.2-arcsec resolution shows the strongest such masers, which may be amplifying the strong double-lobe radio continuum core of the IRS 1 H II region, to be concentrated in two regions separated by about 0.2 arcsec. Observations of several hydrogen recombination line transitions indicate that the velocity of the IRS H II region is similar to that of the ambient molecular cloud.
Dickel Helene R.
Gaume Ralph A.
Goss William Miller
Johnston Ken J.
Nguyen H.-A.
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