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FältnamnIndikatorerMetadata
00007075naa a2200685 4500
001oai:research.chalmers.se:423e1915-4a60-42f7-9be1-46ba76480ccf
003SwePub
008171007s2014 | |||||||||||000 ||eng|
0247 a https://research.chalmers.se/publication/2028932 URI
0247 a https://doi.org/10.1051/0004-6361/2014238432 DOI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a art2 swepub-publicationtype
072 7a ref2 swepub-contenttype
1001 a Burillo, S. G.u Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)4 aut
2451 0a Molecular line emission in NGC 1068 imaged with ALMA : I. An AGN-driven outflow in the dense molecular gas
264 c 2014-07-29
264 1b EDP Sciences,c 2014
338 a electronic2 rdacarrier
520 a Aims. We investigate the fueling and the feedback of star formation and nuclear activity in NGC 1068, a nearby (D = 14 Mpc) Seyfert 2 barred galaxy, by analyzing the distribution and kinematics of the molecular gas in the disk. We aim to understand if and how gas accretion can self-regulate.Methods. We have used the Atacama Large Millimeter Array (ALMA) to map the emission of a set of dense molecular gas (n(H2) ' 1056 cm3) tracers (CO(3-2), CO(6-5), HCN(4-3), HCO+(4-3), and CS(7-6)) and their underlying continuum emission in the central r ∼ 2 kpc of NGC 1068 with spatial resolutions ∼0:3000:500 (∼20-35 pc for the assumed distance of D = 14 Mpc). Results. The sensitivity and spatial resolution of ALMA give an unprecedented detailed view of the distribution and kinematics of the dense molecular gas (n(H2) ≈ 1056cm3) in NGC 1068. Molecular line and dust continuum emissions are detected from a r ∼ 200 pc off-centered circumnuclear disk (CND), from the 2.6 kpc-diameter bar region, and from the r ∼ 1:3 kpc starburst (SB) ring. Most of the emission in HCO+, HCN, and CS stems from the CND. Molecular line ratios show dramatic order-of-magnitude changes inside the CND that are correlated with the UV/X-ray illumination by the active galactic nucleus (AGN), betraying ongoing feedback. We used the dust continuum fluxes measured by ALMA together with NIR/MIR data to constrain the properties of the putative torus using CLUMPY models and found a torus radius of 20+6 10 pc. The Fourier decomposition of the gas velocity field indicates that rotation is perturbed by an inward radial flow in the SB ring and the bar region. However, the gas kinematics from r ∼ 50 pc out to r ∼ 400 pc reveal a massive (Mmol ∼ 2:7+0:9 1:2 × 107 M) outflow in all molecular tracers. The tight correlation between the ionized gas outflow, the radio jet, and the occurrence of outward motions in the disk suggests that the outflow is AGN driven. Conclusions. The molecular outflow is likely launched when the ionization cone of the narrow line region sweeps the nuclear disk. The outflow rate estimated in the CND, dM=dt ∼ 63+21 37 M yr1, is an order of magnitude higher than the star formation rate at these radii, confirming that the outflow is AGN driven. The power of the AGN is able to account for the estimated momentum and kinetic luminosity of the outflow. The CND mass load rate of the CND outflow implies a very short gas depletion timescale of ≤1 Myr. The CND gas reservoir is likely replenished on longer timescales by efficient gas inflow from the outer disk. © ESO 2014.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a Galaxies: Seyfert
653 a Galaxies: nuclei
653 a Radio lines: galaxies
653 a Galaxies: ISM
653 a Galaxies: kinematics and dynamics
653 a Galaxies: individual: NGC 1068
7001 a Combes, F.u Centre national de la recherche scientifique (CNRS)4 aut
7001 a Usero, A.u Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)4 aut
7001 a Aalto, Susanne,d 1964u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)saalto
7001 a Krips, M.u Université Grenoble Alpes,Grenoble Alpes University4 aut
7001 a Viti, S.u University College London (UCL)4 aut
7001 a Alonso-Herrero, A.u CSIC-UC - Instituto de Física de Cantabria (IFCA)4 aut
7001 a Hunt, L. K.u Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory4 aut
7001 a Schinnerer, E.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
7001 a Baker, A. J.u Rutgers University4 aut
7001 a Boone, F.u Université de Toulouse,University of Toulouse4 aut
7001 a Casasola, V.u Istituto di Radioastronomia4 aut
7001 a Colina, L.u Centro de Astrobiologia (CAB)4 aut
7001 a Costagliola, Francesco,d 1981u Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)4 aut0 (Swepub:cth)costagli
7001 a Eckart, A.u Universität zu Köln,University of Cologne4 aut
7001 a Fuente, A.u Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)4 aut
7001 a Henkel, C.u King Abdulaziz University,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
7001 a Labiano, A.u Eidgenössische Technische Hochschule Zürich (ETH),Swiss Federal Institute of Technology in Zürich (ETH),Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)4 aut
7001 a Martín, S.u Université Grenoble Alpes,Grenoble Alpes University4 aut
7001 a Márquez, I.u Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA)4 aut
7001 a Muller, Sebastien,d 1976u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)mullers
7001 a Planesas, P.u Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)4 aut
7001 a Ramos Almeida, C.u Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna4 aut
7001 a Spaans, M.u Rijksuniversiteit Groningen,University of Groningen4 aut
7001 a Tacconi, L. J.u Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)4 aut
7001 a van der Werf, P.P.u Universiteit Leiden (UL),Leiden University (UL)4 aut
7102 a Observatorio Astronómico Nacional (OAN)b Centre national de la recherche scientifique (CNRS)4 org
7730 t Astronomy and Astrophysicsd : EDP Sciencesg 567, s. 125-q 567<125-x 0004-6361x 1432-0746
8564 u http://publications.lib.chalmers.se/records/fulltext/202893/local_202893.pdfx primaryx freey FULLTEXT
8564 u https://www.aanda.org/articles/aa/pdf/2014/07/aa23843-14.pdf
8564 8u https://research.chalmers.se/publication/202893
8564 8u https://doi.org/10.1051/0004-6361/201423843

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