Megamasers: Molecular Diagnostics of the Nuclear Ism |
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| Authors: | Willem A. Baan Hans-R. Klöckner |
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| Affiliation: | (1) Westerbork Observatory, ASTRON, 7990 AA Dwingeloo, The Netherlands;(2) Kapteyn Astronomical Institute, University of Groningen, Groningen, The Netherlands |
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| Abstract: | Molecular emissions are powerful tracers of intense heating and star-formation processes in galactic nuclei. In this paper we consider the characteristics of molecular Megamaser emission among the population of (Ultra-) Luminous Infrared Galaxies that are powered by intense star-formation or accretion onto a massive compact object. In addition, we consider the systematic behavior of the line emission of high-density tracer molecules. An evolutionary scenario is presented for ULIRGs that may explain the molecular line ratios observed in the population of FIR galaxies. |
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| Keywords: | extragalactic molecule hydroxyl maser emission |
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