When a Black Hole Fails to do its Job
The study of Stellar Formation Rates has long been at the heart of galactic/extragalactic astrophysics. Recent galaxy cluster surveys, such as the South Pole Telescope Survey, have revealed that high redshift (z>1) galaxy clusters, unlike their local counterparts, are regions of intense star form...
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ftzenodo:oai:zenodo.org:4985649 2024-09-15T18:36:48+00:00 When a Black Hole Fails to do its Job Rhea, Carter Hlavacek0Larrondo 2021-06-18 https://doi.org/10.5281/zenodo.4985649 unknown Zenodo https://zenodo.org/communities/gcf2021 https://doi.org/10.5281/zenodo.4985648 https://doi.org/10.5281/zenodo.4985649 oai:zenodo.org:4985649 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Galaxy Cluster info:eu-repo/semantics/lecture 2021 ftzenodo https://doi.org/10.5281/zenodo.498564910.5281/zenodo.4985648 2024-07-25T16:41:20Z The study of Stellar Formation Rates has long been at the heart of galactic/extragalactic astrophysics. Recent galaxy cluster surveys, such as the South Pole Telescope Survey, have revealed that high redshift (z>1) galaxy clusters, unlike their local counterparts, are regions of intense star formation. Previous studies suggest the buildup of stellar mass through positive feedback mechanisms such as major mergers and ram pressure stripping; however our recent investigation of the massive galaxy cluster SpARCS104922.6+564032.5 reveals a new and unexpected mechanism -- an unrestrained cooling flow. More precisely, the cluster stands out as harboring a still assembling brightest cluster galaxy (BCG) undergoing extreme stellar formation at z=1.7091 (~850 M☉/yr). Here, we present 170 ks (~50 hours) of new Chandra observations. Using several techniques for calculating galactic substructure and proxies of cooling flows, we develop a more coherent image of the mechanism responsible for the rampant stellar formation of the BCG. Our results show the presence of a strong cooling flow cospatial with the region of intense star formation ~50 kpc from the BCG indicating a lack of AGN feedback in the system -- in direct contrast to local counterparts. Moreover, the lack of a mechanism to suppress star formation appears to be providing the ideal environment for a buildup of intracluster light. This demonstrates a novel mechanism for the formation of stellar mass in galaxy clusters. Lecture South pole Zenodo |
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Galaxy Cluster Rhea, Carter When a Black Hole Fails to do its Job |
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The study of Stellar Formation Rates has long been at the heart of galactic/extragalactic astrophysics. Recent galaxy cluster surveys, such as the South Pole Telescope Survey, have revealed that high redshift (z>1) galaxy clusters, unlike their local counterparts, are regions of intense star formation. Previous studies suggest the buildup of stellar mass through positive feedback mechanisms such as major mergers and ram pressure stripping; however our recent investigation of the massive galaxy cluster SpARCS104922.6+564032.5 reveals a new and unexpected mechanism -- an unrestrained cooling flow. More precisely, the cluster stands out as harboring a still assembling brightest cluster galaxy (BCG) undergoing extreme stellar formation at z=1.7091 (~850 M☉/yr). Here, we present 170 ks (~50 hours) of new Chandra observations. Using several techniques for calculating galactic substructure and proxies of cooling flows, we develop a more coherent image of the mechanism responsible for the rampant stellar formation of the BCG. Our results show the presence of a strong cooling flow cospatial with the region of intense star formation ~50 kpc from the BCG indicating a lack of AGN feedback in the system -- in direct contrast to local counterparts. Moreover, the lack of a mechanism to suppress star formation appears to be providing the ideal environment for a buildup of intracluster light. This demonstrates a novel mechanism for the formation of stellar mass in galaxy clusters. |
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Hlavacek0Larrondo |
format |
Lecture |
author |
Rhea, Carter |
author_facet |
Rhea, Carter |
author_sort |
Rhea, Carter |
title |
When a Black Hole Fails to do its Job |
title_short |
When a Black Hole Fails to do its Job |
title_full |
When a Black Hole Fails to do its Job |
title_fullStr |
When a Black Hole Fails to do its Job |
title_full_unstemmed |
When a Black Hole Fails to do its Job |
title_sort |
when a black hole fails to do its job |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://doi.org/10.5281/zenodo.4985649 |
genre |
South pole |
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South pole |
op_relation |
https://zenodo.org/communities/gcf2021 https://doi.org/10.5281/zenodo.4985648 https://doi.org/10.5281/zenodo.4985649 oai:zenodo.org:4985649 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.498564910.5281/zenodo.4985648 |
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1810480512080281600 |