2007/12/10 by Masako Yamada, Masumi Yamada
Physics and Astronomy · #Astrophysics and Star Formation Studies #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/eas:0831020
4 pages, 2 figures. Contribution to FIR Workshop 2007 "Far-Infrared and Submillimeter Emission of the Interstellar Medium: Models meet extragalactic and Galactic Observations"
arxiv created 2007/12/10 · openalex publication_date 2008/01/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Molecular gas in external galaxies is a subject of crucial importance for observational and theoretical studies of galaxy formation. Compact molecular gas around an active galactic nucleus (AGN) is expected to be an important part of the energy budget of the AGN and/or the nuclear starburst. Recent observational studies suggest that line ratios in the millimeter and submillimeter bands may be a good tool to reveal the long-standing question on the origin of activity – AGN or nuclear starburst. We have constructed a powerful “telescope” of theory, a three-dimensional non-LTE line transfer code, preceding the high resolution and sensitivity observations such as ALMA.