Three unusual wide-spectrum H2O sources

Details Three unusual wide-spectrum H2O sources Three unusual wide-spectrum H2O sources

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.180p..51g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 180, Aug. 1977, p. 51P-56P.

Astronomy and Astrophysics

Astronomy

7

Astronomical Spectroscopy, Interstellar Gas, Line Spectra, Radio Sources (Astronomy), Water Vapor, Calibrating, H Ii Regions, Hydrogen Ions, Interstellar Radiation, Radiant Flux Density, Spectral Line Width

Scientific paper

A new type of wide-spectrum H2O source has been detected in H2O 291.3-0.7 (NGC 3576), H2O 351.2+0.7 (NGC 6334B), and H2O 12.2-0.1. The displaced velocity components have total widths in excess of 15 km/s and have negative velocity displacements. In two of the sources, these spectral components are stronger than the H2O features at velocities close to that of the H II region, and they show pronounced time variations.

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