Interferometric molecular line observations of W51.

Details Interferometric molecular line observations of W51. Interferometric molecular line observations of W51.

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989iaus..135p.221r&link_type=abstract

IAU Symposium No. 135: Interstellar dust: contributed papers, p. 221 - 226

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H Ii Regions: Molecular Clouds, Interferometry: Molecular Clouds

Scientific paper

This paper presents observations of the H II region complex in W51 made with the Hat Creek millimeter interferometer. W51 is a region of massive star-formation approximately 7 kpc distant from the sun. Previous observations have revealed three regions of interest: (1) W51 MAIN, a knot of bright maser emission near two compact H II regions W51 e1 and W51 e2. (2) W51 IRS1 is a long curving structure seen at 20 μm and at 2 and 6 cm but not at 400 μm. (3) W51 IRS2 (also known as W51 NORTH) is another compact H II region slightly offset from an 8 μm and a 20 μm peak and a collection of H2O masers. In both W51 MAIN and W51 IRS2 there is hot (100K) ammonia seen (Ho, et.al. 1983) and evidence for outflow activity.

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