A spectacular galactic scale magnetohydrodynamic powered wind in ESO 320-G030
Artikel i vetenskaplig tidskrift, 2024
How galaxies regulate nuclear growth through gas accretion by supermassive black holes (SMBHs) is one of the most fundamental questions in galaxy evolution. One potential way to regulate nuclear growth is through a galactic wind that removes gas from the nucleus. It is unclear whether galactic winds are powered by jets, mechanical winds, radiation, or via magnetohydrodynamic (MHD) processes. Compact obscured nuclei represent a significant phase of galactic nuclear growth. These galaxies hide growing SMBHs or unusual starbursts in their very opaque, extremely compact (r < 100 pc) centres. They are found in approximately 30% of the luminous and ultra-luminous infrared galaxy population. Here, we present high-resolution ALMA observations (∼30 mas, ∼5 pc) of ground-state and vibrationally excited HCN towards ESO 320-G030 (IRAS 11506-3851). ESO 320-G030 is an isolated luminous infrared galaxy known to host a compact obscured nucleus and a kiloparsec-scale molecular wind. Our analysis of these high-resolution observations excludes the possibility of a starburst-driven wind, a mechanically or energy driven active galactic nucleus wind, and exposes a molecular MDH wind. These results imply that the nuclear evolution of galaxies and the growth of SMBHs are similar to the growth of hot cores or protostars where gravitational collapse of the nuclear torus drives a MHD wind. These results mean galaxies are capable, in part, of regulating the evolution of their nuclei without feedback.
galaxies: structure
galaxies: evolution
galaxies: ISM
galaxies: clusters: individual: ESO 320-G030
galaxies: nuclei
Författare
Mark Gorski
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Northwestern University
Susanne Aalto
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Sabine König
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Clare Wethers
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Chentao Yang
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Sebastien Muller
Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium
Kyoko Onishi
National Astronomical Observatory of Japan
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Mamiko Sato
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
Niklas Falstad
Extragalaktisk astrofysik
J. G. Mangum
National Radio Astronomy Observatory
S. T. Linden
University of Massachusetts
F. Combes
Observatoire de Paris
S. Martin
Atacama Large Millimeter-submillimeter Array (ALMA)
European Southern Observatory Santiago
M. Imanishi
National Astronomical Observatory of Japan
K. Wada
Kagoshima University
Loreto Barcos-Munoz
University of Virginia
National Radio Astronomy Observatory
F. Stanley
Institut de Radioastronomie Millimétrique (IRAM)
S. G. Burillo
Observatorio Astronómico Nacional (OAN)
P. van der Werf
Universiteit Leiden
A. S. Evans
National Radio Astronomy Observatory
University of Virginia
C. Henkel
Max-Planck-Gesellschaft
Xinjiang Astronomical Observatory
King Abdulaziz University
Serena Viti
University College London (UCL)
Universiteit Leiden
N. Harada
National Astronomical Observatory of Japan
The Graduate University for Advanced Studies (SOKENDAI)
T. Diaz-Santos
Idryma Technologias kai Erevnas (FORTH)
European University Cyprus
J. S. Gallagher III
University of Wisconsin
E. Gonzalez-Alfonso
Universidad de Alcala
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 684 L11Molekyler som Diagnostiska Redskap för Aktiva och Skymda Galaxer
Vetenskapsrådet (VR) (2011-4143), 2012-01-01 -- 2014-12-31.
Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
Infrastruktur
Onsala rymdobservatorium
DOI
10.1051/0004-6361/202348821