Arecibo emission-absorption observations of Galactic OH

Details Arecibo emission-absorption observations of Galactic OH Arecibo emission-absorption observations of Galactic OH

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...336..231c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 336, Jan. 1, 1989, p. 231-242. Research supported by the National Astronomy

Astronomy and Astrophysics

Astronomy

7

Absorption Spectra, Hydroxyl Emission, Interstellar Gas, Milky Way Galaxy, Molecular Clouds, Carbon Monoxide, Continuous Radiation, H Ii Regions, Particle Collisions, Spectral Line Width

Scientific paper

Observations of OH emission/absorption toward 19 low-Galactic-latitude background-continuum sources are reported. Data obtained at 1.665 and 1.667 GHz using the 12-m radio telescope at Arecibo Observatory during February-March 1984, are presented in extensive tables and graphs and characterized in detail, with reference to theoretical models. A total of 11 OH absorption features were detected toward nine of the sources, with an average of one feature of optical depth 0.02 or greater per 5 kpc of path length and an average column density of 1.6 x 10 to the 12th/sq cm (corrected to b = 90 deg).

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