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A precessing molecu...
A precessing molecular jet signaling an obscured, growing supermassive black hole in NGC 1377?
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- Aalto, Susanne, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Costagliola, Francesco, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Muller, Sebastien, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sakamoto, K. (author)
- Academia Sinica Taiwan
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- Gallagher, Jay (author)
- University of Wisconsin Madison
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- Dasyra, K. M. (author)
- University of Athens
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- Wada, K. (author)
- Kagoshima University
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- Combes, F. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Burillo, S. G. (author)
- Observatorio Astronómico Nacional (OAN),Spanish National Observatory (OAN)
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- Kristensen, L. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Martin, S. (author)
- Atacama Large Millimeter-submillimeter Array (ALMA),Institut de Radioastronomie Millimétrique (IRAM),European Southern Observatory Santiago
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- van der Werf, P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Evans, A. S. (author)
- University of Virginia,National Radio Astronomy Observatory
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- Kotilainen, J. (author)
- Turun Yliopisto,University of Turku
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(creator_code:org_t)
- 2016-05-13
- 2016
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 590, s. Art. no. A73-
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Abstract
Subject headings
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- With high resolution (0."25 × 0."18) ALMA CO 3-2 (345 GHz) observations of the nearby (D = 21 Mpc, 1" = 102 pc), extremely radio-quiet galaxy NGC 1377, we have discovered a high-velocity, very collimated nuclear outflow which we interpret as a molecular jet with a projected length of ± 150 pc. The launch region is unresolved and lies inside a radius r 40% of the flux in NGC 1377 and may be a slower, wide-angle molecular outflow which is partially entrained by the molecular jet. We discuss the driving mechanism of the molecular jet and suggest that it is either powered by a (faint) radio jet or by an accretion disk-wind similar to those found towards protostars. It seems unlikely that a massive jet could have been driven out by the current level of nuclear activity which should then have undergone rapid quenching. The light jet would only have expelled 10% of the inner gas and may facilitate nuclear activity instead of suppressing it. The nucleus of NGC 1377 harbours intense embedded activity and we detect emission from vibrationally excited HCN J = 4-3?2 = 1f which is consistent with hot gas and dust. We find large columns of H2 in the centre of NGC 1377 which may be a sign of a high rate of recent gas infall. The dynamical age ofthe molecular jet is short (
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Galaxies: jets
- Galaxies: individual: NGC 1377
- Galaxies: active
- ISM: molecules
- Galaxies: ISM
- Galaxies: evolution
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Aalto, Susanne, ...
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Costagliola, Fra ...
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Muller, Sebastie ...
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Sakamoto, K.
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Gallagher, Jay
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Dasyra, K. M.
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show more...
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Wada, K.
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Combes, F.
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Burillo, S. G.
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Kristensen, L.
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Martin, S.
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van der Werf, P.
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Evans, A. S.
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Kotilainen, J.
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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 ...
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Astronomy and As ...
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Chalmers University of Technology