T.S. Green
Hiding in plain sight – recovering clusters of galaxies with the strongest AGN in their cores
Green, T.S.; Edge, A.C.; Ebeling, H.; Burgett, W.S.; Draper, P.W.; Kaiser, N.; Kudritzki, R.-P.; Magnier, E.A.; Metcalfe, N.; Wainscoat, R.J.; Waters, C.
Authors
Professor Alastair Edge alastair.edge@durham.ac.uk
Professor
H. Ebeling
W.S. Burgett
P.W. Draper
N. Kaiser
R.-P. Kudritzki
E.A. Magnier
Dr Nigel Metcalfe nigel.metcalfe@durham.ac.uk
Assistant Professor
R.J. Wainscoat
C. Waters
Abstract
A key challenge in understanding the feedback mechanism of active galactic nucleus (AGN) in Brightest Cluster Galaxies (BCGs) is the inherent rarity of catching an AGN during its strong outburst phase. This is exacerbated by the ambiguity of differentiating between AGN and clusters in X-ray observations. If there is evidence for an AGN then the X-ray emission is commonly assumed to be dominated by the AGN emission, introducing a selection effect against the detection of AGN in BCGs. In order to recover these ‘missing’ clusters, we systematically investigate the colour–magnitude relation around some ∼3500 ROSAT All-Sky Survey selected AGN, looking for signs of a cluster red sequence. Amongst our 22 candidate systems, we independently rediscover several confirmed systems, where a strong AGN resides in a central galaxy. We compare the X-ray luminosity to red sequence richness distribution of our AGN candidate systems with that of a similarly selected comparison sample of ∼1000 confirmed clusters and identify seven ‘best’ candidates (all of which are BL Lac objects), where the X-ray flux is likely to be a comparable mix between cluster and AGN emission. We confirm that the colours of the red sequence are consistent with the redshift of the AGN, that the colours of the AGN host galaxy are consistent with AGN, and, by comparing their luminosities with those from our comparison clusters, confirm that the AGN hosts are consistent with BCGs.
Citation
Green, T., Edge, A., Ebeling, H., Burgett, W., Draper, P., Kaiser, N., …Waters, C. (2017). Hiding in plain sight – recovering clusters of galaxies with the strongest AGN in their cores. Monthly Notices of the Royal Astronomical Society, 465(4), 4872-4885. https://doi.org/10.1093/mnras/stw3059
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 2, 2016 |
Online Publication Date | Nov 23, 2016 |
Publication Date | Mar 1, 2017 |
Deposit Date | Jan 10, 2017 |
Publicly Available Date | Jan 11, 2017 |
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 | 465 |
Issue | 4 |
Pages | 4872-4885 |
DOI | https://doi.org/10.1093/mnras/stw3059 |
Public URL | https://durham-repository.worktribe.com/output/1366651 |
Related Public URLs | https://arxiv.org/abs/1611.07996 |
Files
Published Journal Article
(11 Mb)
PDF
Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
You might also like
High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275
(2024)
Journal Article
A massive multiphase plume of gas in Abell 2390’s brightest cluster galaxy
(2024)
Journal Article
Constraints on thermal conductivity in the merging cluster Abell 2146
(2023)
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