DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES
We present new ultraviolet, optical, and X-ray data on the Phoenix galaxy cluster (SPT-CLJ2344-4243). Deep optical imaging reveals previously undetected filaments of star formation, extending to radii of ~50–100 kpc in multiple directions. Combined UV-optical spectroscopy of the central galaxy revea...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2015
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| Online Access: | http://hdl.handle.net/1721.1/100034 https://orcid.org/0000-0002-0883-9383 https://orcid.org/0000-0002-1379-4482 |
| _version_ | 1811001663655247872 |
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| author | McNamara, Brian R. Weeren, Reinout J. van Applegate, Douglas E. Bayliss, Matthew Bautz, Marshall W. Benson, Bradford A. Carlstrom, John E. Bleem, Lindsey E. Chatzikos, Marios Edge, Alastair C. Fabian, Andrew C. Garmire, Gordon P. Hlavacek-Larrondo, Julie Jones-Forman, Christine Mantz, Adam B. Stalder, Brian Veilleux, Sylvain ZuHone, John A. McDonald, Michael A. Miller, Eric D |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics McNamara, Brian R. Weeren, Reinout J. van Applegate, Douglas E. Bayliss, Matthew Bautz, Marshall W. Benson, Bradford A. Carlstrom, John E. Bleem, Lindsey E. Chatzikos, Marios Edge, Alastair C. Fabian, Andrew C. Garmire, Gordon P. Hlavacek-Larrondo, Julie Jones-Forman, Christine Mantz, Adam B. Stalder, Brian Veilleux, Sylvain ZuHone, John A. McDonald, Michael A. Miller, Eric D |
| author_sort | McNamara, Brian R. |
| collection | MIT |
| description | We present new ultraviolet, optical, and X-ray data on the Phoenix galaxy cluster (SPT-CLJ2344-4243). Deep optical imaging reveals previously undetected filaments of star formation, extending to radii of ~50–100 kpc in multiple directions. Combined UV-optical spectroscopy of the central galaxy reveals a massive (2 × 10[superscript 9] M[subscript ⊙]), young (~4.5 Myr) population of stars, consistent with a time-averaged star formation rate of 610 ± 50 M[subscript ⊙] yr[superscript −1]. We report a strong detection of O vi λλ1032,1038, which appears to originate primarily in shock-heated gas, but may contain a substantial contribution (>1000 M[subscript ⊙] yr[superscript −1]) from the cooling intracluster medium (ICM). We confirm the presence of deep X-ray cavities in the inner ~10 kpc, which are among the most extreme examples of radio-mode feedback detected to date, implying jet powers of 2–7 × 10[superscript 45] erg s[superscript −1]. We provide evidence that the active galactic nucleus inflating these cavities may have only recently transitioned from "quasar-mode" to "radio-mode," and may currently be insufficient to completely offset cooling. A model-subtracted residual X-ray image reveals evidence for prior episodes of strong radio-mode feedback at radii of ~100 kpc, with extended "ghost" cavities indicating a prior epoch of feedback roughly 100 Myr ago. This residual image also exhibits significant asymmetry in the inner ~200 kpc (0.15R[subscript 500]), reminiscent of infalling cool clouds, either due to minor mergers or fragmentation of the cooling ICM. Taken together, these data reveal a rapidly evolving cool core which is rich with structure (both spatially and in temperature), is subject to a variety of highly energetic processes, and yet is cooling rapidly and forming stars along thin, narrow filaments. |
| first_indexed | 2024-09-23T15:36:13Z |
| format | Article |
| id | mit-1721.1/100034 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:36:13Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1000342022-10-02T02:57:38Z DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES McNamara, Brian R. Weeren, Reinout J. van Applegate, Douglas E. Bayliss, Matthew Bautz, Marshall W. Benson, Bradford A. Carlstrom, John E. Bleem, Lindsey E. Chatzikos, Marios Edge, Alastair C. Fabian, Andrew C. Garmire, Gordon P. Hlavacek-Larrondo, Julie Jones-Forman, Christine Mantz, Adam B. Stalder, Brian Veilleux, Sylvain ZuHone, John A. McDonald, Michael A. Miller, Eric D Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research McDonald, Michael A. Bautz, Marshall W. Miller, Eric D. ZuHone, John A. We present new ultraviolet, optical, and X-ray data on the Phoenix galaxy cluster (SPT-CLJ2344-4243). Deep optical imaging reveals previously undetected filaments of star formation, extending to radii of ~50–100 kpc in multiple directions. Combined UV-optical spectroscopy of the central galaxy reveals a massive (2 × 10[superscript 9] M[subscript ⊙]), young (~4.5 Myr) population of stars, consistent with a time-averaged star formation rate of 610 ± 50 M[subscript ⊙] yr[superscript −1]. We report a strong detection of O vi λλ1032,1038, which appears to originate primarily in shock-heated gas, but may contain a substantial contribution (>1000 M[subscript ⊙] yr[superscript −1]) from the cooling intracluster medium (ICM). We confirm the presence of deep X-ray cavities in the inner ~10 kpc, which are among the most extreme examples of radio-mode feedback detected to date, implying jet powers of 2–7 × 10[superscript 45] erg s[superscript −1]. We provide evidence that the active galactic nucleus inflating these cavities may have only recently transitioned from "quasar-mode" to "radio-mode," and may currently be insufficient to completely offset cooling. A model-subtracted residual X-ray image reveals evidence for prior episodes of strong radio-mode feedback at radii of ~100 kpc, with extended "ghost" cavities indicating a prior epoch of feedback roughly 100 Myr ago. This residual image also exhibits significant asymmetry in the inner ~200 kpc (0.15R[subscript 500]), reminiscent of infalling cool clouds, either due to minor mergers or fragmentation of the cooling ICM. Taken together, these data reveal a rapidly evolving cool core which is rich with structure (both spatially and in temperature), is subject to a variety of highly energetic processes, and yet is cooling rapidly and forming stars along thin, narrow filaments. United States. National Aeronautics and Space Administration (Contract HST-GO-13456.002A (Hubble)) United States. National Aeronautics and Space Administration (Contract GO4-15122A (Chandra)) United States. National Aeronautics and Space Administration (Hubble Fellowship Grant HST-HF51308.01) 2015-11-24T18:26:13Z 2015-11-24T18:26:13Z 2015-09 2015-05 Article http://purl.org/eprint/type/JournalArticle 1538-4357 0004-637X http://hdl.handle.net/1721.1/100034 McDonald, Michael, Brian R. McNamara, Reinout J. van Weeren, Douglas E. Applegate, Matthew Bayliss, Marshall W. Bautz, Bradford A. Benson, et al. “DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES.” The Astrophysical Journal 811, no. 2 (September 28, 2015): 111. © 2015 The American Astronomical Society https://orcid.org/0000-0002-0883-9383 https://orcid.org/0000-0002-1379-4482 en_US http://dx.doi.org/10.1088/0004-637X/811/2/111 The Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing IOP Publishing |
| spellingShingle | McNamara, Brian R. Weeren, Reinout J. van Applegate, Douglas E. Bayliss, Matthew Bautz, Marshall W. Benson, Bradford A. Carlstrom, John E. Bleem, Lindsey E. Chatzikos, Marios Edge, Alastair C. Fabian, Andrew C. Garmire, Gordon P. Hlavacek-Larrondo, Julie Jones-Forman, Christine Mantz, Adam B. Stalder, Brian Veilleux, Sylvain ZuHone, John A. McDonald, Michael A. Miller, Eric D DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES |
| title | DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES |
| title_full | DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES |
| title_fullStr | DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES |
| title_full_unstemmed | DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES |
| title_short | DEEP CHANDRA , HST-COS, AND MEGACAM OBSERVATIONS OF THE PHOENIX CLUSTER: EXTREME STAR FORMATION AND AGN FEEDBACK ON HUNDRED KILOPARSEC SCALES |
| title_sort | deep chandra hst cos and megacam observations of the phoenix cluster extreme star formation and agn feedback on hundred kiloparsec scales |
| url | http://hdl.handle.net/1721.1/100034 https://orcid.org/0000-0002-0883-9383 https://orcid.org/0000-0002-1379-4482 |
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