Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448
Abstract 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 th...
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ftumelbourne:oai:jupiter.its.unimelb.edu.au:11343/333690 2024-06-02T08:14:38+00:00 Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448 Masterson, M McDonald, M Ansarinejad, B Bayliss, M Benson, BAA Bleem, LEE Calzadilla, MSS Edge, ACC Floyd, B Kim, KJJ Khullar, G Somboonpanyakul, T 2023-02-01 http://hdl.handle.net/11343/333690 English eng IOP Publishing Ltd issn:0004-637X doi:10.3847/1538-4357/acae9e Masterson, M., McDonald, M., Ansarinejad, B., Bayliss, M., Benson, B. A. A., Bleem, L. E. E., Calzadilla, M. S. S., Edge, A. C. C., Floyd, B., Kim, K. J. J., Khullar, G. & Somboonpanyakul, T. (2023). Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448. ASTROPHYSICAL JOURNAL, 944 (2), https://doi.org/10.3847/1538-4357/acae9e. 1538-4357 http://hdl.handle.net/11343/333690 Journal Article 2023 ftumelbourne https://doi.org/10.3847/1538-4357/acae9e 2024-05-06T11:58:17Z Abstract 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 ( <?CDATA ${K}_{0}={18}_{-9}^{+11}$?> K 0 = 18 − 9 + 11 keV cm2), 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 <?CDATA ${\dot{M}}_{\mathrm{cool}}={100}_{-60}^{+90}\,{M}_{\odot }$?> 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 <?CDATA ${\mathrm{SFR}}_{[{\rm{O}}\,{\rm\small{II}}]}={1.7}_{-0.6}^{+1.0}\,{M}_{\odot }$?> SFR [ O II ] = 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 <?CDATA ${P}_{\mathrm{cav}}={3.2}_{-1.3}^{+2.1}\times {10}^{44}$?> P cav = 3.2 − 1.3 + 2.1 × 10 44 erg s−1, which is consistent with the X-ray cooling luminosity ( <?CDATA ${L}_{\mathrm{cool}}={1.9}_{-0.5}^{+0.2}\times {10}^{44}$?> L cool = 1.9 − 0.5 + 0.2 × 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 ... Article in Journal/Newspaper South pole The University of Melbourne: Digital Repository South Pole The Astrophysical Journal 944 2 164 |
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The University of Melbourne: Digital Repository |
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ftumelbourne |
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English |
description |
Abstract 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 ( <?CDATA ${K}_{0}={18}_{-9}^{+11}$?> K 0 = 18 − 9 + 11 keV cm2), 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 <?CDATA ${\dot{M}}_{\mathrm{cool}}={100}_{-60}^{+90}\,{M}_{\odot }$?> 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 <?CDATA ${\mathrm{SFR}}_{[{\rm{O}}\,{\rm\small{II}}]}={1.7}_{-0.6}^{+1.0}\,{M}_{\odot }$?> SFR [ O II ] = 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 <?CDATA ${P}_{\mathrm{cav}}={3.2}_{-1.3}^{+2.1}\times {10}^{44}$?> P cav = 3.2 − 1.3 + 2.1 × 10 44 erg s−1, which is consistent with the X-ray cooling luminosity ( <?CDATA ${L}_{\mathrm{cool}}={1.9}_{-0.5}^{+0.2}\times {10}^{44}$?> L cool = 1.9 − 0.5 + 0.2 × 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 ... |
format |
Article in Journal/Newspaper |
author |
Masterson, M McDonald, M Ansarinejad, B Bayliss, M Benson, BAA Bleem, LEE Calzadilla, MSS Edge, ACC Floyd, B Kim, KJJ Khullar, G Somboonpanyakul, T |
spellingShingle |
Masterson, M McDonald, M Ansarinejad, B Bayliss, M Benson, BAA Bleem, LEE Calzadilla, MSS Edge, ACC Floyd, B Kim, KJJ Khullar, G Somboonpanyakul, T Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448 |
author_facet |
Masterson, M McDonald, M Ansarinejad, B Bayliss, M Benson, BAA Bleem, LEE Calzadilla, MSS Edge, ACC Floyd, B Kim, KJJ Khullar, G Somboonpanyakul, T |
author_sort |
Masterson, M |
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 |
publisher |
IOP Publishing Ltd |
publishDate |
2023 |
url |
http://hdl.handle.net/11343/333690 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
issn:0004-637X doi:10.3847/1538-4357/acae9e Masterson, M., McDonald, M., Ansarinejad, B., Bayliss, M., Benson, B. A. A., Bleem, L. E. E., Calzadilla, M. S. S., Edge, A. C. C., Floyd, B., Kim, K. J. J., Khullar, G. & Somboonpanyakul, T. (2023). Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448. ASTROPHYSICAL JOURNAL, 944 (2), https://doi.org/10.3847/1538-4357/acae9e. 1538-4357 http://hdl.handle.net/11343/333690 |
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 |
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1800738554773504000 |