D.J. Rosario
LLAMA: normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies
Rosario, D.J.; Burtscher, L.; Davies, R.I.; Koss, M.; Ricci, C.; Lutz, D.; Riffel, R.; Alexander, D.M.; Genzel, R.; Hicks, E.H.; Lin, M.-Y.; Maciejewski, W.; Müller-Sánchez, F.; Orban de Xivry, G.; Riffel, R.A.; Schartmann, M.; Schawinski, K.; Schnorr-Müller, A.; Saintonge, A.; Shimizu, T.; Sternberg, A.; Storchi-Bergmann, T.; Sturm, E.; Tacconi, L.; Treister, E.; Veilleux, S.
Authors
L. Burtscher
R.I. Davies
M. Koss
C. Ricci
D. Lutz
R. Riffel
Professor David Alexander d.m.alexander@durham.ac.uk
Professor
R. Genzel
E.H. Hicks
M.-Y. Lin
W. Maciejewski
F. Müller-Sánchez
G. Orban de Xivry
R.A. Riffel
M. Schartmann
K. Schawinski
A. Schnorr-Müller
A. Saintonge
T. Shimizu
A. Sternberg
T. Storchi-Bergmann
E. Sturm
L. Tacconi
E. Treister
S. Veilleux
Abstract
Using new Atacama Pathfinder Experiment and James Clerk Maxwell Telescope spectroscopy of the CO 2→1 line, we undertake a controlled study of cold molecular gas in moderately luminous (Lbol = 1043–44.5 erg s−1) active galactic nuclei (AGN) and inactive galaxies from the Luminous Local AGN with Matched Analogs (LLAMA) survey. We use spatially resolved infrared photometry of the LLAMA galaxies from 2MASS, the Wide-field Infrared Survey Explorer the Infrared Astronomical Satellite and the Herschel Space Observatory (Herschel), corrected for nuclear emission using multicomponent spectral energy distribution fits, to examine the dust-reprocessed star formation rates, molecular gas fractions and star formation efficiencies (SFEs) over their central 1–3 kpc. We find that the gas fractions and central SFEs of both active and inactive galaxies are similar when controlling for host stellar mass and morphology (Hubble type). The equivalent central molecular gas depletion times are consistent with the discs of normal spiral galaxies in the local Universe. Despite energetic arguments that the AGN in LLAMA should be capable of disrupting the observable cold molecular gas in their central environments, our results indicate that nuclear radiation only couples weakly with this phase. We find a mild preference for obscured AGN to contain higher amounts of central molecular gas, which suggests connection between AGN obscuration and the gaseous environment of the nucleus. Systems with depressed SFEs are not found among the LLAMA AGN. We speculate that the processes that sustain the collapse of molecular gas into dense pre-stellar cores may also be a prerequisite for the inflow of material on to AGN accretion discs.
Citation
Rosario, D., Burtscher, L., Davies, R., Koss, M., Ricci, C., Lutz, D., …Veilleux, S. (2018). LLAMA: normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies. Monthly Notices of the Royal Astronomical Society, 473(4), 5658-5679. https://doi.org/10.1093/mnras/stx2670
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 6, 2017 |
Online Publication Date | Oct 13, 2017 |
Publication Date | Feb 1, 2018 |
Deposit Date | Feb 22, 2018 |
Publicly Available Date | Feb 22, 2018 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 473 |
Issue | 4 |
Pages | 5658-5679 |
DOI | https://doi.org/10.1093/mnras/stx2670 |
Public URL | https://durham-repository.worktribe.com/output/1338587 |
Files
Published Journal Article
(3.9 Mb)
PDF
Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2017 The Authors.
Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
You might also like
Observational constraints on the stellar recycled gas in active galactic nuclei feeding
(2024)
Journal Article
The Star-Formation Properties of the Observed and Simulated AGN Universe: BAT vs EAGLE
(2020)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search