Volume 626, June 2019
|Number of page(s)||7|
|Section||Letters to the Editor|
|Published online||14 June 2019|
Letter to the Editor
The Close AGN Reference Survey (CARS)
Discovery of a global [C II] 158 μm line excess in AGN HE 1353−1917
Max-Planck-Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
2 I. Physikalisches Institut der Universität zu Köln, Züplicher Str. 77, 50937 Köln, Germany
3 Caltech/IPAC, 1200 E. California Blvd., Pasadena, CA 91125, USA
4 Aix Marseille Univ., CNRS, CNES, LAM, Marseille, France
5 LERMA, Observatoire de Paris, PSL Research Univ., Collège de France, CNRS, Sorbonne Univ., UPMC, Paris, France
6 Sydney Institute for Astronomy, School of Physics, A28, The University of Sydney, NSW 2006, Australia
7 School of Physics & Astronomy, Cardiff University, Queens Buildings, The Parade, Cardiff CF24 3AA, UK
8 Deutsches SOFIA Institut, Pfaffenwaldring 29, 70569 Stuttgart, Germany
9 Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544-1001, USA
10 Research School of Astronomy and Astrophysics, The Australian National University, Cotter Road, Weston, ACT 2611, Australia
11 SOFIA-USRA, NASA Ames Research Center, MS 232-12, Moffett Field, CA 94035, USA
12 Department of Physics & Astronomy, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
13 School of Physics & Astronomy, Rochester Institute of Technology, 84 Lomb Memorial Drive, Rochester, NY 14623, USA
14 Instituto de Astrofísica de Andalucía, Glorieta de las Astronomía s/n, 18008 Granada, Spain
15 Departamento de Física Teórica, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain
16 Gemini Observatory, Northern Operations Center, 670 N. A’ohoku Pl., Hilo, Hawaii 96720, USA
17 Center for Astrophysics, Harvard & Smithsonian, 60 Garden St., Cambridge, MA 02138, USA
18 Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Accepted: 29 April 2019
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.
Key words: galaxies: Seyfert / galaxies: star formation / ISM: jets and outflows / infrared: ISM
© I. Smirnova-Pinchukova et al. 2019
Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Open Access funding provided by Max Planck Society.
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