G0.55-0.85, an H II region-molecular cloud complex

Details G0.55-0.85, an H II region-molecular cloud complex G0.55-0.85, an H II region-molecular cloud complex

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975mnras.171p..29g&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 171, June 1975, p. 29P-31P.

Other

6

H Ii Regions, Hydroxyl Emission, Interstellar Gas, Line Spectra, Microwave Emission, Astronomical Maps, Formaldehyde, H Alpha Line, Ionized Gases, Molecular Spectra

Scientific paper

OH, H2CO and H II0 alpha lines have been observed in the direction of G0.55-0.85, an H II region identified with RCW 142. Optical depths in the satellite lines of OH at 1720 and 1612 MHz are unusually high - both are in absorption with about equal intensity, a central velocity of 16.8 km per sec, and a half-width of 4.7 km per sec. On the other hand, the OH main lines are dominated by a number of narrow emission lines with radial velocities between 6 and 19 km per sec. The results are interpreted in terms of a Class I OH source embedded in a dense molecular cloud, probably no more distant than the Sagittarius arm.

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