Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448
We present a multiwavelength analysis of the galaxy cluster SPT-CL J0607-4448 (SPT0607), which is one of the most distant clusters discovered by the South Pole Telescope at z = 1.4010 ± 0.0028. The high-redshift cluster shows clear signs of being relaxed with well-regulated feedback from the active...
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Online Access: | http://www.osti.gov/servlets/purl/1909868 https://www.osti.gov/biblio/1909868 https://doi.org/10.3847/1538-4357/acae9e |
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ftosti:oai:osti.gov:1909868 2023-07-30T04:06:56+02:00 Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448 Masterson, Megan McDonald, Michael Ansarinejad, Behzad Bayliss, Matthew Benson, Bradford A. Bleem, Lindsey E. Calzadilla, Michael S. Edge, Alastair C. Floyd, Benjamin Kim, Keunho J. Khullar, Gourav Somboonpanyakul, Taweewat 2023-03-23 application/pdf http://www.osti.gov/servlets/purl/1909868 https://www.osti.gov/biblio/1909868 https://doi.org/10.3847/1538-4357/acae9e unknown http://www.osti.gov/servlets/purl/1909868 https://www.osti.gov/biblio/1909868 https://doi.org/10.3847/1538-4357/acae9e doi:10.3847/1538-4357/acae9e 79 ASTRONOMY AND ASTROPHYSICS 2023 ftosti https://doi.org/10.3847/1538-4357/acae9e 2023-07-11T10:17:37Z We present a multiwavelength analysis of the galaxy cluster SPT-CL J0607-4448 (SPT0607), which is one of the most distant clusters discovered by the South Pole Telescope at z = 1.4010 ± 0.0028. The high-redshift cluster shows clear signs of being relaxed with well-regulated feedback from the active galactic nucleus (AGN) in the brightest cluster galaxy (BCG). Using Chandra X-ray data, we construct thermodynamic profiles and determine the properties of the intracluster medium. The cool-core nature of the cluster is supported by a centrally peaked density profile and low central entropy (K 0 = 18$_{-9}^{+11}$ keV cm 2 ), which we estimate assuming an isothermal temperature profile due to the limited spectral information given the distance to the cluster. Using the density profile and gas cooling time inferred from the X-ray data, we find a mass-cooling rate $\dot{M}_{cool}$= 100$_{-60}^{+90}$ M ⊙ yr -1 . From optical spectroscopy and photometry around the [O ii] emission line, we estimate that the BCG star formation rate is SFR [OII] = 1.7$_{-0.6}^{+1.0}$M ⊙ yr -1 , roughly two orders of magnitude lower than the predicted mass-cooling rate. In addition, using ATCA radio data at 2.1 GHz, we measure a radio jet power P cav = 3.2$_{-1.3}^{+2.1}$ x 10 44 erg s -1 , which is consistent with the X-ray cooling luminosity (L cool = 1.9$_{-0.5}^{+0.2}$x 10 44 erg s -1 within r cool = 43 kpc). These findings suggest that SPT0607 is a relaxed, cool-core cluster with AGN-regulated cooling at an epoch shortly after cluster formation, implying that the balance between cooling and feedback can be reached quickly. We discuss the implications for these findings on the evolution of AGN feedback in galaxy clusters. Other/Unknown Material South pole SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) South Pole The Astrophysical Journal 944 2 164 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
79 ASTRONOMY AND ASTROPHYSICS |
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79 ASTRONOMY AND ASTROPHYSICS Masterson, Megan McDonald, Michael Ansarinejad, Behzad Bayliss, Matthew Benson, Bradford A. Bleem, Lindsey E. Calzadilla, Michael S. Edge, Alastair C. Floyd, Benjamin Kim, Keunho J. Khullar, Gourav Somboonpanyakul, Taweewat Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448 |
topic_facet |
79 ASTRONOMY AND ASTROPHYSICS |
description |
We present a multiwavelength analysis of the galaxy cluster SPT-CL J0607-4448 (SPT0607), which is one of the most distant clusters discovered by the South Pole Telescope at z = 1.4010 ± 0.0028. The high-redshift cluster shows clear signs of being relaxed with well-regulated feedback from the active galactic nucleus (AGN) in the brightest cluster galaxy (BCG). Using Chandra X-ray data, we construct thermodynamic profiles and determine the properties of the intracluster medium. The cool-core nature of the cluster is supported by a centrally peaked density profile and low central entropy (K 0 = 18$_{-9}^{+11}$ keV cm 2 ), which we estimate assuming an isothermal temperature profile due to the limited spectral information given the distance to the cluster. Using the density profile and gas cooling time inferred from the X-ray data, we find a mass-cooling rate $\dot{M}_{cool}$= 100$_{-60}^{+90}$ M ⊙ yr -1 . From optical spectroscopy and photometry around the [O ii] emission line, we estimate that the BCG star formation rate is SFR [OII] = 1.7$_{-0.6}^{+1.0}$M ⊙ yr -1 , roughly two orders of magnitude lower than the predicted mass-cooling rate. In addition, using ATCA radio data at 2.1 GHz, we measure a radio jet power P cav = 3.2$_{-1.3}^{+2.1}$ x 10 44 erg s -1 , which is consistent with the X-ray cooling luminosity (L cool = 1.9$_{-0.5}^{+0.2}$x 10 44 erg s -1 within r cool = 43 kpc). These findings suggest that SPT0607 is a relaxed, cool-core cluster with AGN-regulated cooling at an epoch shortly after cluster formation, implying that the balance between cooling and feedback can be reached quickly. We discuss the implications for these findings on the evolution of AGN feedback in galaxy clusters. |
author |
Masterson, Megan McDonald, Michael Ansarinejad, Behzad Bayliss, Matthew Benson, Bradford A. Bleem, Lindsey E. Calzadilla, Michael S. Edge, Alastair C. Floyd, Benjamin Kim, Keunho J. Khullar, Gourav Somboonpanyakul, Taweewat |
author_facet |
Masterson, Megan McDonald, Michael Ansarinejad, Behzad Bayliss, Matthew Benson, Bradford A. Bleem, Lindsey E. Calzadilla, Michael S. Edge, Alastair C. Floyd, Benjamin Kim, Keunho J. Khullar, Gourav Somboonpanyakul, Taweewat |
author_sort |
Masterson, Megan |
title |
Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448 |
title_short |
Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448 |
title_full |
Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448 |
title_fullStr |
Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448 |
title_full_unstemmed |
Evidence for AGN-regulated Cooling in Clusters at z ~ 1.4: A Multiwavelength View of SPT-CL J0607-4448 |
title_sort |
evidence for agn-regulated cooling in clusters at z ~ 1.4: a multiwavelength view of spt-cl j0607-4448 |
publishDate |
2023 |
url |
http://www.osti.gov/servlets/purl/1909868 https://www.osti.gov/biblio/1909868 https://doi.org/10.3847/1538-4357/acae9e |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
http://www.osti.gov/servlets/purl/1909868 https://www.osti.gov/biblio/1909868 https://doi.org/10.3847/1538-4357/acae9e doi:10.3847/1538-4357/acae9e |
op_doi |
https://doi.org/10.3847/1538-4357/acae9e |
container_title |
The Astrophysical Journal |
container_volume |
944 |
container_issue |
2 |
container_start_page |
164 |
_version_ |
1772819895122132992 |