Large-Scale Features of the CON Galaxy NGC4418 with MUSE
Journal article, 2024
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.
ISM: jets and outflows
galaxies: evolution
galaxies: active
Author
Clare Wethers
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Susanne Aalto
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
G. Privon
National Radio Astronomy Observatory
College of Liberal Arts and Sciences
University of Virginia
F. Stanley
Institut de Radioastronomie Millimétrique (IRAM)
J. S. Gallagher III
University of Wisconsin
Mark Gorski
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Sabine König
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Kyoko Onishi
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Chentao Yang
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Proceedings of the International Astronomical Union
1743-9213 (ISSN) 1743-9221 (eISSN)
Vol. 19 30-33Subject Categories (SSIF 2025)
Atom and Molecular Physics and Optics
Astronomy, Astrophysics, and Cosmology
DOI
10.1017/S1743921323002922