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The Black Hole–Galaxy Connection: Interplay between Feedback, Obscuration, and Host Galaxy Substructure

Juneau, Stéphanie; Goulding, Andy D.; Banfield, Julie; Bianchi, Stefano; Duc, Pierre-Alain; Ho, I-Ting; Dopita, Michael A.; Scharwächter, Julia; Bauer, Franz E.; Groves, Brent; Alexander, David M.; Davies, Rebecca L.; Elbaz, David; Freeland, Emily; Hampton, Elise; Kewley, Lisa J.; Nikutta, Robert; Shastri, Prajval; Shu, Xinwen; Vogt, Frédéric P.A.; Wang, Tao; Wong, O. Ivy; Woo, Jong-Hak

The Black Hole–Galaxy Connection: Interplay between Feedback, Obscuration, and Host Galaxy Substructure Thumbnail


Stéphanie Juneau

Andy D. Goulding

Julie Banfield

Stefano Bianchi

Pierre-Alain Duc

I-Ting Ho

Michael A. Dopita

Julia Scharwächter

Franz E. Bauer

Brent Groves

Rebecca L. Davies

David Elbaz

Emily Freeland

Elise Hampton

Lisa J. Kewley

Robert Nikutta

Prajval Shastri

Xinwen Shu

Frédéric P.A. Vogt

Tao Wang

O. Ivy Wong

Jong-Hak Woo


There is growing evidence for physical influence between supermassive black holes and their host galaxies. We present a case study of the nearby galaxy NGC 7582, for which we find evidence that galactic substructure plays an important role in affecting the collimation of ionized outflows as well as contributing to the heavy active galactic nucleus (AGN) obscuration. This result contrasts with a simple, small-scale AGN torus model, according to which AGN-wind collimation may take place inside the torus itself, at subparsec scales. Using 3D spectroscopy with the Multi Unit Spectroscopic Explorer instrument, we probe the kinematics of the stellar and ionized gas components as well as the ionization state of the gas from a combination of emission-line ratios. We report for the first time a kinematically distinct core (KDC) in NGC 7582, on a scale of ∼600 pc. This KDC coincides spatially with dust lanes and starbursting complexes previously observed. We interpret it as a circumnuclear ring of stars and dusty, gas-rich material. We obtain a clear view of the outflowing cones over kiloparsec scales and demonstrate that they are predominantly photoionized by the central engine. We detect the back cone (behind the galaxy) and confirm previous results of a large nuclear obscuration of both the stellar continuum and H ii regions. While we tentatively associate the presence of the KDC with a large-scale bar and/or a minor galaxy merger, we stress the importance of gaining a better understanding of the role of galaxy substructure in controlling the fueling, feedback, and obscuration of AGNs.

Journal Article Type Article
Acceptance Date Nov 28, 2021
Online Publication Date Feb 7, 2022
Publication Date 2022-02
Deposit Date Jun 14, 2022
Publicly Available Date Jun 14, 2022
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 925
Issue 2
Article Number 203
Public URL


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Copyright Statement
Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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