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Large-Scale Features of the CON Galaxy NGC4418 with MUSE

Published online by Cambridge University Press:  28 October 2024

Clare F. Wethers Open the ORCID record for Clare F. Wethers [Opens in a new window] ,
Susanne Aalto ,
G. C. Privon ,
F. Stanley ,
J. Gallagher ,
M. Gorski ,
S. König ,
K. Onishi  and
C. Yang
Clare F. Wethers*
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
Susanne Aalto
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
G. C. Privon
Affiliation:
National Radio Astronomy Observatory, Charlottesville, VA 22903, USA Department of Astronomy, University of Florida, Gainesville, FL 32611, USA Department of Astronomy, University of Virginia, Charlottesville, VA 22904, USA
F. Stanley
Affiliation:
IRAM, Domaine Universitaire 38406 Saint Martin d’Héres, France
J. Gallagher
Affiliation:
Wisconsin IceCube Particle Astrophysics Center, Madison, WI 53703, USA
M. Gorski
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
S. König
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
K. Onishi
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
C. Yang
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
*
email: [email protected]
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Abstract

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Compact obscured nuclei (CONs) are relatively common in the centers of local (U)LIRGs, yet their nature remains unknown. Both AGN activity and extreme nuclear starbursts have been suggested as plausible nuclear power sources. The prevalence of outflows in these systems suggest that CONs represent a key phase in the nuclear feedback cycle, in which material is ejected from the central regions of the galaxy. Here, we present results from MUSE for the confirmed local CON galaxy NGC4418. For the first time we spatially map the spectral features and kinematics of the galaxy in the optical, revealing several previously unknown structures. In particular, we discover a bilateral outflow along the minor axis, an outflowing bubble, several knot structures and a receding outflow partially obscured by the galactic disk. Based on the properties of these features, we conclude that the CON in NGC4418 is most likely powered by an AGN.

Keywords

ISM: jets and outflowsgalaxies: activegalaxies: evolution
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S378: Black Hole Winds at All Scales , December 2023 , pp. 30 - 33
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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