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Double, double, toi...
Double, double, toil, and trouble: The tails, bubbles, and knots of the local compact obscured nucleus galaxy NGC 4418
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- Wethers, Clare, 1991 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Aalto, Susanne, 1964 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Privon, G. (författare)
- National Radio Astronomy Observatory,University of Florida,University of Virginia
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visa fler...
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- Stanley, F. (författare)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Gallagher III, J. S. (författare)
- University of Wisconsin Madison
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- Gorski, Mark, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- König, Sabine, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Onishi, Kyoko, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sato, Mamiko, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Yang, Chentao, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Beswick, R. J. (författare)
- University of Manchester
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- Barcos-Munoz, Loreto (författare)
- University of Virginia
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- Combes, F. (författare)
- Observatoire de Paris,Paris Observatory
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Diaz-Santos, T. (författare)
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- Evans, A. S. (författare)
- University of Virginia,National Radio Astronomy Observatory
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- García-Bernete, I. (författare)
- University Of Oxford
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- Henkel, C. (författare)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),King Abdulaziz University
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- Imanishi, M. (författare)
- National Astronomical Observatory of Japan
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- Martin, S. (författare)
- European Southern Observatory Santiago,Atacama Large Millimeter-submillimeter Array (ALMA)
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Muller, S. (författare)
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- Nishimura, Y. (författare)
- University of Tokyo, Japan
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- Ricci, C. (författare)
- Universidad Diego Portales,Diego Portales University,Beijing University of Technology
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- Rigopoulou, D. (författare)
- National Radio Astronomy Observatory
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- Viti, Serena (författare)
- University College London (UCL),Universiteit Leiden (UL),Leiden University (UL)
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Astronomy and Astrophysics. - 0004-6361 .- 1432-0746. ; 683
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Context. Compact obscured nuclei (CONs) are an extremely obscured (NH2>1025 cm-2) class of galaxy nuclei thought to exist in 20-40 per cent of nearby (ultra-)luminous infrared galaxies While they have been proposed to represent a key phase of the active galactic nucleus (AGN) feedback cycle, the nature of these CONs -what powers them, their dynamics, and their impact on the host galaxy -remains unknown. Aims. This work analyses the galaxy-scale optical properties of the local CON NGC 4418 (z=0.00727). The key aims of the study are to understand the impact of nuclear outflows on the host galaxy and infer the power source of its CON. Through the mapping of the galaxy spectra and kinematics, we seek to identify new structures in NGC 4418 to ultimately reveal more about the CON's history, its impact on the host, and, more generally, the role CONs play in galaxy evolution. Methods. We present new, targeted integral field unit observations of the galaxy with the Multi-Unit Spectroscopic Explorer (MUSE). For the first time, we mapped the ionised and neutral gas components of the galaxy, along with their dynamical structure, to reveal several previously unknown features of the galaxy. Results. We confirm the presence of a previously postulated, blueshifted outflow along the minor axis of NGC 4418. We find this outflow to be decelerating and, for the first time, show it to extend in both directions from the nucleus. We report the discovery of two further outflow structures: a redshifted southern outflow connected to a tail of ionised gas surrounding the galaxy and a blueshifted bubble to the north. In addition to these features, we find the [OIII] emission reveals the presence of knots across the galaxy, which are consistent with regions of the galaxy that have been photoionised by an AGN. Conclusions. We identify several new features in NGC 4418, including a bubble structure, a reddened outflow, and [OIII] knot structures throughout the galaxy. We additionally confirm the presence of a bilateral blueshifted outflow along the minor axis. Based on the properties of these features, we conclude that the CON in NGC 4418 is most likely powered by AGN activity.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Galaxies: evolution
- Galaxies: active
- Galaxies: nuclei
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Wethers, Clare, ...
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Aalto, Susanne, ...
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Privon, G.
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Stanley, F.
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Gallagher III, J ...
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Gorski, Mark, 19 ...
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visa fler...
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König, Sabine, 1 ...
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Onishi, Kyoko, 1 ...
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Sato, Mamiko, 19 ...
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Yang, Chentao, 1 ...
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Beswick, R. J.
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Barcos-Munoz, Lo ...
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Combes, F.
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Diaz-Santos, T.
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Evans, A. S.
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García-Bernete, ...
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Henkel, C.
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Imanishi, M.
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Martin, S.
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Muller, S.
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Nishimura, Y.
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Ricci, C.
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Rigopoulou, D.
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Viti, Serena
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