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ALMA resolves the t...
ALMA resolves the torus of NGC 1068: Continuum and molecular line emission
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- Burillo, S. G. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
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- Combes, F. (author)
- Collège de France
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- Almeida, C. R. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
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- Usero, A. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
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- Krips, M. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Alonso-Herrero, A. (author)
- Centro de Astrobiologia (CAB)
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- Aalto, Susanne, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Casasola, V. (author)
- Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory
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- Hunt, L. K. (author)
- Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory
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- Martin, S. (author)
- Atacama Large Millimeter-submillimeter Array (ALMA),European Southern Observatory Santiago
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- Viti, S. (author)
- University College London (UCL)
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- Colina, L. (author)
- Centro de Astrobiologia (CAB),Universidad Autonoma de Madrid (UAM)
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- Costagliola, Francesco, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Eckart, A. (author)
- Universität zu Köln,University of Cologne
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- Fuente, A. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
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- Henkel, C. (author)
- King Abdulaziz University,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Marquez, I. (author)
- Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)
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- Neri, R. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Schinnerer, E. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Tacconi, L. J. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- van der Werf, P.P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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(creator_code:org_t)
- 2016-05-16
- 2016
- English.
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In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8213 .- 2041-8205. ; 823:1, s. Art. no. L12-
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Abstract
Subject headings
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- We used the Atacama Large Millimeter Array (ALMA) to map the emission of the CO(6-5) molecular line and the 432 mu m continuum emission from the 300 pc sized circumnuclear disk (CND) of the nearby Seyfert 2 galaxy NGC 1068 with a spatial resolution of similar to 4 pc. These observations spatially resolve the CND and, for the first time, image the dust emission, the molecular gas distribution, and the kinematics from a 7-10 pc diameter disk that represents the submillimeter counterpart of the putative torus of NGC 1068. We fitted the nuclear spectral energy distribution of the torus using ALMA and near-and mid-infrared (NIR/MIR) data with CLUMPY torus models. The mass and radius of the best-fit solution for the torus are both consistent with the values derived from the ALMA data alone: M-gas(torus) = (1 +/- 0.3) x 10(5) M-circle dot and R-torus = 3.5 +/- 0.5 pc. The dynamics of the molecular gas in the torus show strong non-circular motions and enhanced turbulence superposed on a surprisingly slow rotation pattern of the disk. By contrast with the nearly edge-on orientation of the H2O megamaser disk, we found evidence suggesting that the molecular torus is less inclined (i = 34 degrees-66 degrees) at larger radii. The lopsided morphology and complex kinematics of the torus could be the signature of the Papaloizou-Pringle instability, long predicted to likely drive the dynamical evolution of active galactic nuclei tori.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: Seyfert
- galaxies: nuclei
- galaxies: ISM
- galaxies: kinematics and dynamics
- galaxies: individual (NGC 1068)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Burillo, S. G.
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Combes, F.
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Almeida, C. R.
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Usero, A.
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Krips, M.
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Alonso-Herrero, ...
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show more...
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Aalto, Susanne, ...
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Casasola, V.
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Hunt, L. K.
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Martin, S.
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Viti, S.
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Colina, L.
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Costagliola, Fra ...
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Eckart, A.
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Fuente, A.
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Henkel, C.
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Marquez, I.
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Neri, R.
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Schinnerer, E.
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Tacconi, L. J.
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van der Werf, P. ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astrophysical Jo ...
- By the university
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Chalmers University of Technology