EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03
While the cooling of the hot intracluster medium (ICM) in the cores of galaxy clusters is mostly counteracted by heating from the central active galactic nucleus (AGN), the balance is not perfect. This can lead to residual cooling flows and low-level star formation, the physics of which is not well...
| 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/1721.1/97085 |
| _version_ | 1811096807487307776 |
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| author | Werner, N. Oonk, J. B. R. Veilleux, S. McDonald, Michael A. |
| author2 | MIT Kavli Institute for Astrophysics and Space Research |
| author_facet | MIT Kavli Institute for Astrophysics and Space Research Werner, N. Oonk, J. B. R. Veilleux, S. McDonald, Michael A. |
| author_sort | Werner, N. |
| collection | MIT |
| description | While the cooling of the hot intracluster medium (ICM) in the cores of galaxy clusters is mostly counteracted by heating from the central active galactic nucleus (AGN), the balance is not perfect. This can lead to residual cooling flows and low-level star formation, the physics of which is not well understood. Here we present a detailed study of the residual cooling flow in the center of the low mass galaxy cluster Sérsic 159-03 (A S1101; z = 0.058) using far-ultraviolet imaging from the Hubble Space Telescope and far-IR (FIR) spectroscopy and photometry from the Herschel Space Observatory, along with a wealth of archival data. We detect extended emission at UV, FIR, and [C ii], indicating a star formation rate of ~1–3 M[subscript ʘ] yr[superscript −1], depending on the indicator and assumptions made. The most recently formed stars (as indicated by high Hα/UV ratios) appear spatially coincident with the lowest entropy ICM. We speculate that this low-entropy gas has been displaced by the central AGN ~7.5 kpc north of the cD galaxy. These data suggest that the displacement of the cooling core from the direct vicinity of the central AGN can temporarily break the feedback cycle and lead to cooling and star formation that is offset from the center of the galaxy. We find an abundance (~10[superscript 7] M[subscript ʘ]) of cold (20 K) dust in the center of the cluster and a second FIR peak ~30 kpc to the north of the central galaxy. If confirmed to be associated with the cooling filaments, this would be the most extended complex of dust yet found in a cool core cluster. |
| first_indexed | 2024-09-23T16:49:19Z |
| format | Article |
| id | mit-1721.1/97085 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:49:19Z |
| publishDate | 2015 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/970852022-09-29T21:41:49Z EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03 Werner, N. Oonk, J. B. R. Veilleux, S. McDonald, Michael A. MIT Kavli Institute for Astrophysics and Space Research McDonald, Michael A. While the cooling of the hot intracluster medium (ICM) in the cores of galaxy clusters is mostly counteracted by heating from the central active galactic nucleus (AGN), the balance is not perfect. This can lead to residual cooling flows and low-level star formation, the physics of which is not well understood. Here we present a detailed study of the residual cooling flow in the center of the low mass galaxy cluster Sérsic 159-03 (A S1101; z = 0.058) using far-ultraviolet imaging from the Hubble Space Telescope and far-IR (FIR) spectroscopy and photometry from the Herschel Space Observatory, along with a wealth of archival data. We detect extended emission at UV, FIR, and [C ii], indicating a star formation rate of ~1–3 M[subscript ʘ] yr[superscript −1], depending on the indicator and assumptions made. The most recently formed stars (as indicated by high Hα/UV ratios) appear spatially coincident with the lowest entropy ICM. We speculate that this low-entropy gas has been displaced by the central AGN ~7.5 kpc north of the cD galaxy. These data suggest that the displacement of the cooling core from the direct vicinity of the central AGN can temporarily break the feedback cycle and lead to cooling and star formation that is offset from the center of the galaxy. We find an abundance (~10[superscript 7] M[subscript ʘ]) of cold (20 K) dust in the center of the cluster and a second FIR peak ~30 kpc to the north of the central galaxy. If confirmed to be associated with the cooling filaments, this would be the most extended complex of dust yet found in a cool core cluster. United States. National Aeronautics and Space Administration (Hubble Fellowship Grant HST-HF51308.01 A) 2015-05-26T20:15:21Z 2015-05-26T20:15:21Z 2015-04 2014-11 Article http://purl.org/eprint/type/JournalArticle 1538-4357 0004-637X http://hdl.handle.net/1721.1/97085 McDonald, M., N. Werner, J. B. R. Oonk, and S. Veilleux. “EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03.” The Astrophysical Journal 804, no. 1 (April 24, 2015): 16. © 2015 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-637X/804/1/16 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 | Werner, N. Oonk, J. B. R. Veilleux, S. McDonald, Michael A. EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03 |
| title | EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03 |
| title_full | EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03 |
| title_fullStr | EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03 |
| title_full_unstemmed | EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03 |
| title_short | EXTENDED, DUSTY STAR FORMATION FUELED BY A RESIDUAL COOLING FLOW IN THE CLUSTER OF GALAXIES SERSIC 159-03 |
| title_sort | extended dusty star formation fueled by a residual cooling flow in the cluster of galaxies sersic 159 03 |
| url | http://hdl.handle.net/1721.1/97085 |
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