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LIBRIS Formathandbok  (Information om MARC21)
00004758naa a2200517 4500
008171008s2015 | |||||||||||000 ||eng|
024a https://doi.org/10.1051/0004-6361/2015261332 DOI
024a https://research.chalmers.se/publication/2209592 URI
040 a (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Burillo, S. G.4 aut
2451 0a High-resolution imaging of the molecular outflows in two mergers: IRAS 17208-0014 and NGC 1614
264 1c 2015
338 a electronic2 rdacarrier
520 a Context. Galaxy evolution scenarios predict that the feedback of star formation and nuclear activity (AGN) can drive the transformation of gas-rich spiral mergers into (ultra) luminous infrared galaxies and, eventually, lead to the build-up of QSO/elliptical hosts. Aims. We study the role that star formation and AGN feedback have in launching and maintaining the molecular outflows in two starburst-dominated advanced mergers, NGC 1614 (DL = 66 Mpc) and IRAS 17208-0014 (DL = 181 Mpc), by analyzing the distribution and kinematics of their molecular gas reservoirs. Both galaxies present evidence of outflows in other phases of their ISM. Methods. We used the Plateau de Bure interferometer (PdBI) to image the CO(10) and CO(21) line emissions in NGC 1614 and IRAS 17208-0014, respectively, with high spatial resolution (0: 0051: 002). The velocity fields of the gas were analyzed and modeled to find the evidence of molecular outflows in these sources and characterize the mass, momentum, and energy of these components. Results. While most (95%) of the CO emission stems from spatially resolved (23 kpc-diameter) rotating disks, we also detect in both mergers the emission from high-velocity line wings that extend up to -500-700 km s1, well beyond the estimated virial range associated with rotation and turbulence. The kinematic major axis of the line-wing emission is tilted by 90 in NGC 1614 and by 180 in IRAS 17208-0014 relative to the major axes of their respective rotating disks. These results can be explained by the existence of non-coplanar molecular outflows in both systems: the outflow axis is nearly perpendicular to the rotating disk in NGC 1614, but it is tilted relative to the angular momentum axis of the rotating disk in IRAS 17208-0014. Conclusions. In stark contrast to NGC 1614, where star formation alone can drive its molecular outflow, the mass, energy, and momentum budget requirements of the molecular outflow in IRAS 17208-0014 can be best accounted for by the existence of a so far undetected (hidden) AGN of LAGN71011 L The geometry of the molecular outflow in IRAS 17208-0014 suggests that the outflow is launched by a non-coplanar disk that may be associated with a buried AGN in the western nucleus.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a Galaxies: ISM
653 a Galaxies: individual: IRAS 17208-0014
653 a Galaxies: individual: NGC1614
653 a Galaxies: starburst
653 a Galaxies: kinematics and dynamics
653 a Galaxies: nuclei
700a Combes, F.u Centre national de la recherche scientifique (CNRS), France4 aut
700a Usero, A.4 aut
700a Aalto, Susanne,d 1964u Chalmers University of Technology,Chalmers tekniska högskola4 aut0 (Swepub:cth)saalto
700a Colina, L.u Centro de Astrobiologia (CAB), Spain4 aut
700a Alonso-Herrero, A.4 aut
700a Hunt, L. K.4 aut
700a Arribas, S.u Centro de Astrobiologia (CAB), Spain4 aut
700a Costagliola, Francesco,d 1981u Institute of Astrophysics of Andalusia (IAA), Spain4 aut0 (Swepub:cth)costagli
700a Labiano, A.u Swiss Federal Institute of Technology in Zürich (ETH), Switzerland4 aut
700a Neri, R.u Grenoble Alpes University, France4 aut
700a Pereira-Santaella, M.u Centro de Astrobiologia (CAB), Spain4 aut
700a Tacconi, L. J.u Max Planck Society for the Advancement of Science (MPG), Germany4 aut
700a van der Werf, P.P.u Leiden University (UL), Netherlands4 aut
710a Chalmers tekniska högskolab Centre national de la recherche scientifique (CNRS), France4 org
773t Astronomy and Astrophysicsg 580q 580x 0004-6361x 1432-0746
856u http://publications.lib.chalmers.se/records/fulltext/220959/local_220959.pdfx primaryx freey FULLTEXT
8564 8u https://doi.org/10.1051/0004-6361/201526133
8564 8u https://research.chalmers.se/publication/220959

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