The nature of the variable millimetre-selected AGN in the Brightest Cluster Galaxy of Abell 851

R. A. Cheale; J. E. Geach; A. C. Edge; Y. C. Perrott; T. Cantwell

doi:10.1093/mnrasl/sly161

The nature of the variable millimetre-selected AGN in the Brightest Cluster Galaxy of Abell 851

R. A. Cheale, J. E. Geach, A. C. Edge, Y. C. Perrott, T. Cantwell

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Abstract

We present the detection of a bright 3mm continuum source in the brightest cluster galaxy (BCG) in Abell 0851 (z = 0.411) with the NOrthern Extended Millimeter Array (NOEMA). When this detection is compared to other multifrequency observations across 21cm-100μm, including new Arcminute Microkelvin Imager 15 GHz observations, we find evidence for a relatively flat, variable core source associated with the BCG. The radio power and amplitude of variability observed in this galaxy is consistent with the cores in lower redshift BCGs in X-ray-selected clusters, and the flat mm-cm spectrum is suggestive of the BCG being a low-luminosity active galactic nucleus archetype. The discovery of this system could provide a basis for a long-term study of the role of low-luminosity radio mode 'regulatory' feedback in massive clusters.

Original language	English
Pages (from-to)	L54–L58
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	481
Issue number	1
Early online date	31 Aug 2018
DOIs	https://doi.org/10.1093/mnrasl/sly161
Publication status	Published - 21 Nov 2018

Keywords

astro-ph.GA
Techniques: interferometric
Galaxies: clusters: individual: (A851
Galaxies: elliptical and lenticular
CD- galaxies: evolution
Cl 0939+4713)
Galaxies: clusters: individual:Abell 851

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1809.01700v1Accepted author manuscript, 488 KBLicence: Other

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title = "The nature of the variable millimetre-selected AGN in the Brightest Cluster Galaxy of Abell 851",

abstract = "We present the detection of a bright 3mm continuum source in the brightest cluster galaxy (BCG) in Abell 0851 (z = 0.411) with the NOrthern Extended Millimeter Array (NOEMA). When this detection is compared to other multifrequency observations across 21cm-100μm, including new Arcminute Microkelvin Imager 15 GHz observations, we find evidence for a relatively flat, variable core source associated with the BCG. The radio power and amplitude of variability observed in this galaxy is consistent with the cores in lower redshift BCGs in X-ray-selected clusters, and the flat mm-cm spectrum is suggestive of the BCG being a low-luminosity active galactic nucleus archetype. The discovery of this system could provide a basis for a long-term study of the role of low-luminosity radio mode 'regulatory' feedback in massive clusters.",

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author = "Cheale, \{R. A.\} and Geach, \{J. E.\} and Edge, \{A. C.\} and Perrott, \{Y. C.\} and T. Cantwell",

note = "5 pages, 3 figures Cheale, R. A., Geach, J. E., Edge, A. C., Perrott, Y. C., \& Cantwell, T. (2018). The nature of the variable millimetre-selected AGN in the Brightest Cluster Galaxy of Abell 851. Monthly Notices of the Royal Astronomical Society: Letters, 481(1), L54– L58. DOI: 10.1093/mnrasl/sly161 This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters. {\textcopyright} 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.",

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AU - Geach, J. E.

AU - Edge, A. C.

AU - Perrott, Y. C.

AU - Cantwell, T.

N1 - 5 pages, 3 figures Cheale, R. A., Geach, J. E., Edge, A. C., Perrott, Y. C., & Cantwell, T. (2018). The nature of the variable millimetre-selected AGN in the Brightest Cluster Galaxy of Abell 851. Monthly Notices of the Royal Astronomical Society: Letters, 481(1), L54– L58. DOI: 10.1093/mnrasl/sly161 This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters. © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

PY - 2018/11/21

Y1 - 2018/11/21

N2 - We present the detection of a bright 3mm continuum source in the brightest cluster galaxy (BCG) in Abell 0851 (z = 0.411) with the NOrthern Extended Millimeter Array (NOEMA). When this detection is compared to other multifrequency observations across 21cm-100μm, including new Arcminute Microkelvin Imager 15 GHz observations, we find evidence for a relatively flat, variable core source associated with the BCG. The radio power and amplitude of variability observed in this galaxy is consistent with the cores in lower redshift BCGs in X-ray-selected clusters, and the flat mm-cm spectrum is suggestive of the BCG being a low-luminosity active galactic nucleus archetype. The discovery of this system could provide a basis for a long-term study of the role of low-luminosity radio mode 'regulatory' feedback in massive clusters.

AB - We present the detection of a bright 3mm continuum source in the brightest cluster galaxy (BCG) in Abell 0851 (z = 0.411) with the NOrthern Extended Millimeter Array (NOEMA). When this detection is compared to other multifrequency observations across 21cm-100μm, including new Arcminute Microkelvin Imager 15 GHz observations, we find evidence for a relatively flat, variable core source associated with the BCG. The radio power and amplitude of variability observed in this galaxy is consistent with the cores in lower redshift BCGs in X-ray-selected clusters, and the flat mm-cm spectrum is suggestive of the BCG being a low-luminosity active galactic nucleus archetype. The discovery of this system could provide a basis for a long-term study of the role of low-luminosity radio mode 'regulatory' feedback in massive clusters.

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KW - Galaxies: clusters: individual: (A851

KW - Galaxies: elliptical and lenticular

KW - CD- galaxies: evolution

KW - Cl 0939+4713)

KW - Galaxies: clusters: individual:Abell 851

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VL - 481

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JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

The nature of the variable millimetre-selected AGN in the Brightest Cluster Galaxy of Abell 851

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Keywords

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