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The Close AGN Reference Survey (CARS). Discovery of a global [C II] 158 μm line excess in AGN HE 1353-1917

Abstract : The [C II]λ158 μm line is one of the strongest far-infrared (FIR) lines and an important coolant in the interstellar medium of galaxies that is accessible out to high redshifts. The excitation of [C II] is complex and can best be studied in detail at low redshifts. Here we report the discovery of the highest global [C II] excess with respect to the FIR luminosity in the nearby AGN host galaxy HE 1353-1917. This galaxy is exceptional among a sample of five targets because the AGN ionization cone and radio jet directly intercept the cold galactic disk. As a consequence, a massive multiphase gas outflow on kiloparsec scales is embedded in an extended narrow-line region. Because HE 1353-1917 is distinguished by these special properties from our four bright AGN, we propose that a global [C II] excess in AGN host galaxies could be a direct signature of a multiphase AGN-driven outflow with a high mass-loading factor.
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https://hal-insu.archives-ouvertes.fr/insu-03666746
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Submitted on : Thursday, May 12, 2022 - 5:25:58 PM
Last modification on : Friday, August 5, 2022 - 3:37:49 PM

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I. Smirnova-Pinchukova, B. Husemann, G. Busch, P. Appleton, M. Bethermin, et al.. The Close AGN Reference Survey (CARS). Discovery of a global [C II] 158 μm line excess in AGN HE 1353-1917. Astronomy and Astrophysics - A&A, EDP Sciences, 2019, 626, ⟨10.1051/0004-6361/201935577⟩. ⟨insu-03666746⟩

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