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Megamaser galaxies

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Abstract

An analysis of a sample of OH megamaser galaxies is presented. It is shown that the dependence of LOH on LFIR (far infrared) is not quadratic, as previously assumed, but closer to linear. In megamaser galaxies, LC (radio continuum) ∼LFIR≤1. Analysis of the data also shows that as the OH emission line width decreases, the absolute values of the pumping efficiency and maser amplification coefficient increase. The radio luminosity of the central component in these galaxies increases with a decrease in the ratio LFIR/LC, whereas the FIR luminosity remains constant. These results will, in all probability, force a reexamination of the questions of pumping and maser emission mechanisms in megamaser galaxies.

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Authors and Affiliations

  1. Byurakan Astrophysical Observatory, Armenia

    R. A. Kandalian

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  1. R. A. Kandalian
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Translated fromAstrofizika, Vol. 39, No. 3, pp. 417–429, July–September, 1996.

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Kandalian, R.A. Megamaser galaxies. Astrophysics 39, 237–244 (1996). https://doi.org/10.1007/BF02071997

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  • DOI: https://doi.org/10.1007/BF02071997

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