The detection of a large-scale ionised outflow in the local CON galaxy Zw049.057
Journal article, 2025
Aims. Current co-evolutionary models of galaxies and their supermassive black holes (SMBHs) almost unanimously predict the existence of a heavily dust-obscured nuclear phase, critical in growing the SMBH and providing feedback to the host galaxy. However, this phase is poorly understood. Compact obscured nuclei (CONs) are relatively common in local (ultra-)luminous infrared galaxies and are the most obscured nuclei known to date, offering the opportunity to study the effects of such a dust-obscured phase on the galaxy. This work presents a case study of the local CON Zw049.057; we study the large-scale features of the galaxy and their connection to the ongoing activity of the central CON. Methods. We present new, targeted MUSE observations of the local CON galaxy Zw049.057, which is known to host multiple outflow features within its central few hundred parsecs. By mapping the kinematics of Hα, we analysed the large-scale features of the galaxy. Results. For the first time, we identify a kiloparsec-scale ionised outflow in Zw049.057, traced by Hα emission. Kinematics reveal the outflow to be blueshifted and orientated to the foreground of the stellar disk. The ionisation of this outflow is consistent with shock-heating, which may be related to the presence of a previously identified radio jet in the galaxy.
ISM: jets and outflows
Galaxies: starburst
Galaxies: interactions
Galaxies: active
Galaxies: evolution
Author
Clare Wethers
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Susanne Aalto
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Santiago Del Palacio
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Boy Lankhaar
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 Madison
Mark Gorski
Northwestern University
Sabine König
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Gustav Olander
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
Mamiko Sato
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
R. J. Beswick
University of Manchester
F. Combes
Paris Observatory
Aaron S. Evans
University of Virginia
National Radio Astronomy Observatory
I. García-Bernete
Centro de Astrobiologia (CAB)
C. Henkel
Max Planck Society
King Abdulaziz University
M. Imanishi
National Astronomical Observatory of Japan
S. T. Linden
University of Arizona
J. G. Mangum
National Radio Astronomy Observatory
Sebastien Muller
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Y. Nishimura
University of Tokyo
C. Ricci
Beijing University of Technology
Diego Portales University
D. Rigopoulou
University of Oxford
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 704 A195Exploring the Hidden Dusty Nuclei of Galaxies (HIDDeN)
European Research Council (ERC) (789410), 2018-10-01 -- 2023-09-30.
Subject Categories (SSIF 2025)
Atom and Molecular Physics and Optics
Astronomy, Astrophysics, and Cosmology
DOI
10.1051/0004-6361/202453013