The Galaxy Activity, Torus and Outflow Survey (GATOS) I. ALMA images of dusty molecular tori in Seyfert galaxies
| Autor: | A. Usero, Almudena Alonso-Herrero, Ric Davies, E. K. S. Hicks, I. García-Bernete, Claudio Ricci, P. G. Boorman, David Williamson, A. Labiano, Leslie K. Hunt, Kohei Ichikawa, Sebastian F. Hönig, Marko Stalevski, C. Ramos Almeida, Dimitra Rigopoulou, Andrew Bunker, Luis Colina, Keiichi Wada, Takuma Izumi, Enrique Lopez-Rodriguez, N. A. Levenson, David J. Rosario, Chris Packham, Omaira González-Martín, Francoise Combes, Taro Shimizu, Santiago García-Burillo, Miguel Pereira-Santaella, Daniel Rouan, Tanio Díaz-Santos, Begoña García-Lorenzo, Poshak Gandhi, Miguel Querejeta, Leonard Burtscher, Masatoshi Imanishi |
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| Rok vydání: | 2021 |
| Předmět: |
GALACTIC NUCLEI
Galaxies: Seyfert Galaxies: Nuclei Active galactic nucleus INFRARED-EMISSION Astrophysics::High Energy Astrophysical Phenomena Continuum (design consultancy) nuclei [galaxies] FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Luminosity Seyfert [galaxies] Galaxies: Evolution 0103 physical sciences 010303 astronomy & astrophysics evolution [galaxies] X-RAY VARIABILITY Astrophysics::Galaxy Astrophysics Line (formation) Physics ISM [galaxies] 010308 nuclear & particles physics RADIO STRUCTURES Astronomy and Astrophysics Torus HUBBLE-SPACE-TELESCOPE Atacama Large Millimeter Array Galaxies: Active Astrophysics - Astrophysics of Galaxies Galaxy Galaxies: ISM NARROW-LINE REGION Physics and Astronomy Space and Planetary Science NGC 1068 Astrophysics of Galaxies (astro-ph.GA) active [galaxies] COVERING FACTORS Outflow FE-K-ALPHA SUBARCSECOND MIDINFRARED VIEW |
| Zdroj: | ASTRONOMY & ASTROPHYSICS Astronomy & Astrophysics, 652 Astronomy & Astrophysics |
| ISSN: | 0004-6361 1432-0746 |
| DOI: | 10.48550/arxiv.2104.10227 |
| Popis: | We present the first results of the Galaxy Activity, Torus and Outflow Survey (GATOS), a project aimed at understanding the properties of the dusty molecular tori and their connection to the host galaxy in nearby Seyfert galaxies. Our project expands the range of AGN luminosities and Eddington ratios covered by previous surveys of Seyferts conducted by ALMA and allows us to study the gas feeding and feedback cycle in a combined sample of 19 Seyferts. We used ALMA to obtain new images of the emission of molecular gas and dust using the CO(3-2) and HCO+(4-3) lines as well as their underlying continuum emission at 870 microns with high spatial resolutions (0.1'' ~ 7 - 13 pc) in the CND of 10 nearby (D < 28 Mpc) Seyfert galaxies. Our new ALMA observations detect 870 micron continuum and CO line emission from spatially resolved disks located around the AGN in all the sources. The bulk of the continuum flux can be accounted for by thermal emission from dust in the majority of the targets. For most of the sources the disks show a preponderant orientation perpendicular to the AGN wind axes, as expected for dusty molecular tori. The median diameters and molecular gas masses of the tori are ~ 42 pc, and ~ 6 x 10**5 Msun, respectively. We find a positive correlation between the line-of-sight gas column densities responsible for the absorption of X-rays and the molecular gas column densities derived from CO towards the AGN in our sources. The radial distributions of molecular gas in the CND of our combined sample show signs of nuclear-scale molecular gas deficits. We also detect molecular outflows in the sources that show the most extreme nuclear-scale gas deficits in our sample. These observations find for the first time supporting evidence that the imprint of AGN feedback is more extreme in higher luminosity and/or higher Eddington ratio Seyfert galaxies. 41 pages, new version revised and accepted by A&A on the 22nd of June 2021 |
| Databáze: | OpenAIRE |
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