The evolution of AGN activity in brightest cluster galaxies
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the ful...
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ftuamadrid:oai:repositorio.uam.es:10486/706406 2023-05-15T18:23:11+02:00 The evolution of AGN activity in brightest cluster galaxies Somboonpanyakul, T. García-Bellido Capdevila, Juan UAM. Departamento de Física Teórica 2023-02-17T11:11:38Z application/pdf http://hdl.handle.net/10486/706406 https://doi.org/10.3847/1538-3881/ac5030 eng eng IOP Publishing Astronomical Journal (AJ) https://doi.org/10.3847/1538-3881/ac5030 Astronomical Journal 163.4 (2022): 146 0004-6256 (print) 1538-3881 (online) http://hdl.handle.net/10486/706406 doi:10.3847/1538-3881/ac5030 146-1 4 146-12 163 The Author(s) Reconocimiento openAccess Active Galactic Nuclei Galaxies Radio Jets (Astronomy) Física article info:eu-repo/semantics/publishedVersion 2023 ftuamadrid https://doi.org/10.3847/1538-3881/ac5030 2023-02-22T00:19:19Z Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the full 2500 deg2 South Pole Telescope (SPT)-Sunyaev-Zel'dovich cluster sample. We describe a process for identifying active galactic nuclei (AGN) in brightest cluster galaxies (BCGs) based on WISE mid-IR color and redshift. Applying this technique to the BCGs of the SPT-SZ sample, we calculate the AGN-hosting BCG fraction, which is defined as the fraction of BCGs hosting bright central AGNs over all possible BCGs. Assuming an evolving single-burst stellar population model, we find statistically significant evidence (>99.9%) for a mid-IR excess at high redshift compared to low redshift, suggesting that the fraction of AGN-hosting BCGs increases with redshift over the range of 0 < z < 1.3. The best-fit redshift trend of the AGN-hosting BCG fraction has the form (1 + z)4.1±1.0. These results are consistent with previous studies in galaxy clusters as well as as in field galaxies. One way to explain this result is that member galaxies at high redshift tend to have more cold gas. While BCGs in nearby galaxy clusters grow mostly by dry mergers with cluster members, leading to no increase in AGN activity, BCGs at high redshift could primarily merge with gas-rich satellites, providing fuel for feeding AGNs. If this observed increase in AGN activity is linked to gas-rich mergers rather than ICM cooling, we would expect to see an increase in scatter in the P cav versus L cool relation at z > 1. Last, this work confirms that the runaway cooling phase, as predicted by the classical cooling-flow model, in the Phoenix cluster is extremely rare and most BCGs have low (relative to Eddington) black hole accretion rates Article in Journal/Newspaper South pole Universidad Autónoma de Madrid (UAM): Biblos-e Archivo Elevado ENVELOPE(-63.267,-63.267,-64.683,-64.683) South Pole The Astronomical Journal 163 4 146 |
institution |
Open Polar |
collection |
Universidad Autónoma de Madrid (UAM): Biblos-e Archivo |
op_collection_id |
ftuamadrid |
language |
English |
topic |
Active Galactic Nuclei Galaxies Radio Jets (Astronomy) Física |
spellingShingle |
Active Galactic Nuclei Galaxies Radio Jets (Astronomy) Física Somboonpanyakul, T. García-Bellido Capdevila, Juan The evolution of AGN activity in brightest cluster galaxies |
topic_facet |
Active Galactic Nuclei Galaxies Radio Jets (Astronomy) Física |
description |
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations of the full 2500 deg2 South Pole Telescope (SPT)-Sunyaev-Zel'dovich cluster sample. We describe a process for identifying active galactic nuclei (AGN) in brightest cluster galaxies (BCGs) based on WISE mid-IR color and redshift. Applying this technique to the BCGs of the SPT-SZ sample, we calculate the AGN-hosting BCG fraction, which is defined as the fraction of BCGs hosting bright central AGNs over all possible BCGs. Assuming an evolving single-burst stellar population model, we find statistically significant evidence (>99.9%) for a mid-IR excess at high redshift compared to low redshift, suggesting that the fraction of AGN-hosting BCGs increases with redshift over the range of 0 < z < 1.3. The best-fit redshift trend of the AGN-hosting BCG fraction has the form (1 + z)4.1±1.0. These results are consistent with previous studies in galaxy clusters as well as as in field galaxies. One way to explain this result is that member galaxies at high redshift tend to have more cold gas. While BCGs in nearby galaxy clusters grow mostly by dry mergers with cluster members, leading to no increase in AGN activity, BCGs at high redshift could primarily merge with gas-rich satellites, providing fuel for feeding AGNs. If this observed increase in AGN activity is linked to gas-rich mergers rather than ICM cooling, we would expect to see an increase in scatter in the P cav versus L cool relation at z > 1. Last, this work confirms that the runaway cooling phase, as predicted by the classical cooling-flow model, in the Phoenix cluster is extremely rare and most BCGs have low (relative to Eddington) black hole accretion rates |
author2 |
UAM. Departamento de Física Teórica |
format |
Article in Journal/Newspaper |
author |
Somboonpanyakul, T. García-Bellido Capdevila, Juan |
author_facet |
Somboonpanyakul, T. García-Bellido Capdevila, Juan |
author_sort |
Somboonpanyakul, T. |
title |
The evolution of AGN activity in brightest cluster galaxies |
title_short |
The evolution of AGN activity in brightest cluster galaxies |
title_full |
The evolution of AGN activity in brightest cluster galaxies |
title_fullStr |
The evolution of AGN activity in brightest cluster galaxies |
title_full_unstemmed |
The evolution of AGN activity in brightest cluster galaxies |
title_sort |
evolution of agn activity in brightest cluster galaxies |
publisher |
IOP Publishing |
publishDate |
2023 |
url |
http://hdl.handle.net/10486/706406 https://doi.org/10.3847/1538-3881/ac5030 |
long_lat |
ENVELOPE(-63.267,-63.267,-64.683,-64.683) |
geographic |
Elevado South Pole |
geographic_facet |
Elevado South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
Astronomical Journal (AJ) https://doi.org/10.3847/1538-3881/ac5030 Astronomical Journal 163.4 (2022): 146 0004-6256 (print) 1538-3881 (online) http://hdl.handle.net/10486/706406 doi:10.3847/1538-3881/ac5030 146-1 4 146-12 163 |
op_rights |
The Author(s) Reconocimiento openAccess |
op_doi |
https://doi.org/10.3847/1538-3881/ac5030 |
container_title |
The Astronomical Journal |
container_volume |
163 |
container_issue |
4 |
container_start_page |
146 |
_version_ |
1766202717413310464 |