Abstract
view Abstract Citations (141) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Broad hydroxyl emission in IC 4553. Baan, W. A. ; Wood, P. A. D. ; Haschick, A. D. Abstract The main line transitions of hydroxyl (OH) have been detected in emission in the peculiar galaxy IC 4553. The 1667 and 1665 MHz transitions appear in a ratio of 4.2:1, and both have a radial velocity of 5375 km/sec and a full width at half-maximum of 108 km/sec. This is the first detection of broad OH emission in an external galaxy. The features are probably due to stimulated emission from many H II/OH masers in the active nuclear region of the galaxy. It is suggested that IC 4553 is a starburst galaxy. Publication: The Astrophysical Journal Pub Date: September 1982 DOI: 10.1086/183868 Bibcode: 1982ApJ...260L..49B Keywords: Galactic Nuclei; Hydroxyl Emission; Interstellar Masers; Peculiar Galaxies; Radio Galaxies; Emission Spectra; Galactic Rotation; Line Spectra; Power Spectra; Radial Velocity; Starburst Galaxies; Astrophysics full text sources ADS | data products SIMBAD (4) NED (4)
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