Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply
In this paper, we present a multiwavelength study of the 90 brightest cluster galaxies (BCGs) in a sample of galaxy clusters selected via the Sunyaev Zel'dovich effect by the South Pole Telescope, utilizing data from various ground- and space-based facilities. We infer the star-formation rate (...
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Online Access: | http://www.osti.gov/servlets/purl/1254644 https://www.osti.gov/biblio/1254644 https://doi.org/10.3847/0004-637X/817/2/86 |
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ftosti:oai:osti.gov:1254644 2023-07-30T04:06:56+02:00 Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply McDonald, M. Stalder, B. Bayliss, M. Allen, S. W. Applegate, D. E. Ashby, M. L. N. Bautz, M. Benson, B. A. Bleem, L. E. Brodwin, M. Carlstrom, J. E. Chiu, I. Desai, S. Gonzalez, A. H. Hlavacek-Larrondo, J. Holzapfel, W. L. Marrone, D. P. Miller, E. D. Reichardt, C. L. Saliwanchik, B. R. Saro, A. Schrabback, T. Stanford, S. A. Stark, A. A. Vieira, J. D. Zenteno, A. 2022-05-23 application/pdf http://www.osti.gov/servlets/purl/1254644 https://www.osti.gov/biblio/1254644 https://doi.org/10.3847/0004-637X/817/2/86 unknown http://www.osti.gov/servlets/purl/1254644 https://www.osti.gov/biblio/1254644 https://doi.org/10.3847/0004-637X/817/2/86 doi:10.3847/0004-637X/817/2/86 79 ASTRONOMY AND ASTROPHYSICS 2022 ftosti https://doi.org/10.3847/0004-637X/817/2/86 2023-07-11T09:06:31Z In this paper, we present a multiwavelength study of the 90 brightest cluster galaxies (BCGs) in a sample of galaxy clusters selected via the Sunyaev Zel'dovich effect by the South Pole Telescope, utilizing data from various ground- and space-based facilities. We infer the star-formation rate (SFR) for the BCG in each cluster—based on the UV and IR continuum luminosity, as well as the [O ii]λλ3726,3729 emission line luminosity in cases where spectroscopy is available—and find seven systems with SFR > 100 M ⊙ yr -1 . We find that the BCG SFR exceeds 10 M ⊙ yr -1 in 31 of 90 (34%) cases at 0.25 < z < 1.25, compared to ~1%–5% at z ~ 0 from the literature. At z ≳ 1, this fraction increases to ${92}_{-31}^{+6}$%, implying a steady decrease in the BCG SFR over the past ~9 Gyr. At low-z, we find that the specific SFR in BCGs is declining more slowly with time than for field or cluster galaxies, which is most likely due to the replenishing fuel from the cooling ICM in relaxed, cool core clusters. At z ≳ 0.6, the correlation between the cluster central entropy and BCG star formation—which is well established at z ~ 0—is not present. Instead, we find that the most star-forming BCGs at high-z are found in the cores of dynamically unrelaxed clusters. We use data from the Hubble Space Telescope to investigate the rest-frame near-UV morphology of a subsample of the most star-forming BCGs, and find complex, highly asymmetric UV morphologies on scales as large as ~50–60 kpc. Finally, the high fraction of star-forming BCGs hosted in unrelaxed, non-cool core clusters at early times suggests that the dominant mode of fueling star formation in BCGs may have recently transitioned from galaxy–galaxy interactions to ICM cooling. Other/Unknown Material South pole SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) South Pole Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) The Astrophysical Journal 817 2 86 |
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Open Polar |
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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 |
spellingShingle |
79 ASTRONOMY AND ASTROPHYSICS McDonald, M. Stalder, B. Bayliss, M. Allen, S. W. Applegate, D. E. Ashby, M. L. N. Bautz, M. Benson, B. A. Bleem, L. E. Brodwin, M. Carlstrom, J. E. Chiu, I. Desai, S. Gonzalez, A. H. Hlavacek-Larrondo, J. Holzapfel, W. L. Marrone, D. P. Miller, E. D. Reichardt, C. L. Saliwanchik, B. R. Saro, A. Schrabback, T. Stanford, S. A. Stark, A. A. Vieira, J. D. Zenteno, A. Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply |
topic_facet |
79 ASTRONOMY AND ASTROPHYSICS |
description |
In this paper, we present a multiwavelength study of the 90 brightest cluster galaxies (BCGs) in a sample of galaxy clusters selected via the Sunyaev Zel'dovich effect by the South Pole Telescope, utilizing data from various ground- and space-based facilities. We infer the star-formation rate (SFR) for the BCG in each cluster—based on the UV and IR continuum luminosity, as well as the [O ii]λλ3726,3729 emission line luminosity in cases where spectroscopy is available—and find seven systems with SFR > 100 M ⊙ yr -1 . We find that the BCG SFR exceeds 10 M ⊙ yr -1 in 31 of 90 (34%) cases at 0.25 < z < 1.25, compared to ~1%–5% at z ~ 0 from the literature. At z ≳ 1, this fraction increases to ${92}_{-31}^{+6}$%, implying a steady decrease in the BCG SFR over the past ~9 Gyr. At low-z, we find that the specific SFR in BCGs is declining more slowly with time than for field or cluster galaxies, which is most likely due to the replenishing fuel from the cooling ICM in relaxed, cool core clusters. At z ≳ 0.6, the correlation between the cluster central entropy and BCG star formation—which is well established at z ~ 0—is not present. Instead, we find that the most star-forming BCGs at high-z are found in the cores of dynamically unrelaxed clusters. We use data from the Hubble Space Telescope to investigate the rest-frame near-UV morphology of a subsample of the most star-forming BCGs, and find complex, highly asymmetric UV morphologies on scales as large as ~50–60 kpc. Finally, the high fraction of star-forming BCGs hosted in unrelaxed, non-cool core clusters at early times suggests that the dominant mode of fueling star formation in BCGs may have recently transitioned from galaxy–galaxy interactions to ICM cooling. |
author |
McDonald, M. Stalder, B. Bayliss, M. Allen, S. W. Applegate, D. E. Ashby, M. L. N. Bautz, M. Benson, B. A. Bleem, L. E. Brodwin, M. Carlstrom, J. E. Chiu, I. Desai, S. Gonzalez, A. H. Hlavacek-Larrondo, J. Holzapfel, W. L. Marrone, D. P. Miller, E. D. Reichardt, C. L. Saliwanchik, B. R. Saro, A. Schrabback, T. Stanford, S. A. Stark, A. A. Vieira, J. D. Zenteno, A. |
author_facet |
McDonald, M. Stalder, B. Bayliss, M. Allen, S. W. Applegate, D. E. Ashby, M. L. N. Bautz, M. Benson, B. A. Bleem, L. E. Brodwin, M. Carlstrom, J. E. Chiu, I. Desai, S. Gonzalez, A. H. Hlavacek-Larrondo, J. Holzapfel, W. L. Marrone, D. P. Miller, E. D. Reichardt, C. L. Saliwanchik, B. R. Saro, A. Schrabback, T. Stanford, S. A. Stark, A. A. Vieira, J. D. Zenteno, A. |
author_sort |
McDonald, M. |
title |
Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply |
title_short |
Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply |
title_full |
Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply |
title_fullStr |
Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply |
title_full_unstemmed |
Star-forming brightest cluster galaxies at 0.25 < z < 1.25: A transitioning fuel supply |
title_sort |
star-forming brightest cluster galaxies at 0.25 < z < 1.25: a transitioning fuel supply |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1254644 https://www.osti.gov/biblio/1254644 https://doi.org/10.3847/0004-637X/817/2/86 |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) |
geographic |
South Pole Hubble |
geographic_facet |
South Pole Hubble |
genre |
South pole |
genre_facet |
South pole |
op_relation |
http://www.osti.gov/servlets/purl/1254644 https://www.osti.gov/biblio/1254644 https://doi.org/10.3847/0004-637X/817/2/86 doi:10.3847/0004-637X/817/2/86 |
op_doi |
https://doi.org/10.3847/0004-637X/817/2/86 |
container_title |
The Astrophysical Journal |
container_volume |
817 |
container_issue |
2 |
container_start_page |
86 |
_version_ |
1772819898176634880 |