OH megamasers in high-luminosity IRAS galaxies

Details OH megamasers in high-luminosity IRAS galaxies OH megamasers in high-luminosity IRAS galaxies

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322..688m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 322, Nov. 15, 1987, p. 688-693. NSF-NASA-supported research.

Astronomy and Astrophysics

Astronomy

36

Abundance, Galactic Radiation, Hydrogen Clouds, Hydroxyl Emission, Infrared Astronomy Satellite, Interstellar Masers, Carbon Monoxide, Far Infrared Radiation, Radial Velocity, Star Formation

Scientific paper

OH megamaser emission and H I and CO profiles from the distant infrared galaxies IRAS 10173 + 0828, III Zw 035, and Zw 475.056 are reported. The OH isotropic luminosities at 1667 MHz are 463, 534, and 6.6 solar luminosities, respectively. Far-infrared pumping efficiencies of the OH greater than 1 percent are found in IRAS 10173 + 0828 and III Zw 035. These two galaxies show anomalously large 1667/1665 MHz emission line ratios. OH megamasers reside in the nuclei of superluminous far-infrared galaxies that have a high content of molecular gas, high efficiency of star formation, and in some instances, a striking deficiency of atomic hydrogen.

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