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  • Horellou, Cathy,1967Chalmers tekniska högskola,Chalmers University of Technology (author)

The XXL Survey: XXXIV. Double Irony in XXL-North: A tale of two radio galaxies in a supercluster at z = 0.14

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • 2018-11-20
  • EDP Sciences,2018
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:28d55b11-16a2-412b-8aa5-2b607add2b7d
  • https://research.chalmers.se/publication/506829URI
  • https://research.chalmers.se/publication/506799URI
  • https://doi.org/10.1051/0004-6361/201832972DOI
  • https://research.chalmers.se/publication/506707URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Aims. We show how the XXL multiwavelength survey can be used to shed light on radio galaxies and their environment. Methods. Two prominent radio galaxies were identified in a visual examination of the mosaic of XXL-North obtained with the Giant Metrewave Radio Telescope at 610 MHz. Counterparts were searched for in other bands. Spectroscopic redshifts from the GAMA database were used to identify clusters and/or groups of galaxies, estimate their masses with the caustic method, and quantify anisotropies in the surrounding galaxy distribution via a Fourier analysis. Results. Both radio galaxies are of FR I type and are hosted by early-type galaxies at a redshift of 0.138. The first radio source, named the Exemplar, has a physical extent of ∼400 kpc; it is located in the cluster XLSSC 112, which has a temperature of ∼2 keV, a total mass of ∼1014 Mo, and resides in an XXL supercluster with eight known members. The second source, named the Double Irony, is a giant radio galaxy with a total length of about 1.1 Mpc. Its core coincides with a cataloged point-like X-ray source, but no extended X-ray emission from a surrounding galaxy cluster was detected. However, from the optical data we determined that the host is the brightest galaxy in a group that is younger, less virialized, and less massive than the Exemplar's cluster. A friends-of-friends analysis showed that the Double Irony's group is a member of the same supercluster as the Exemplar. There are indications that the jets and plumes of the Double Irony have been deflected by gas associated with the surrounding galaxy distribution. Another overdensity of galaxies (the tenth) containing a radio galaxy was found to be associated with the supercluster. Conclusions. Radio Galaxies can be used to find galaxy clusters/groups that are below the current sensitivity of X-ray surveys.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Intema, H. T.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Smolcic, V.Sveučilište u Zagrebu,University of Zagreb (author)
  • Nilsson, Andreas,1989Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)andn (author)
  • Karlsson, F.Chalmers tekniska högskola,Chalmers University of Technology (author)
  • Krook, C.Chalmers tekniska högskola,Chalmers University of Technology (author)
  • Tolliner, L.Chalmers tekniska högskola,Chalmers University of Technology (author)
  • Adami, C.Laboratoire d'Astrophysique de Marseille (author)
  • Benoist, C.Observatoire de la Cote d'Azur (author)
  • Birkinshaw, M.University of Bristol (author)
  • Caretta, C.Universidad de Guanajuato (author)
  • Chiappetti, L.Istituto nazionale di astrofisica (INAF) (author)
  • Delhaize, J.Sveučilište u Zagrebu,University of Zagreb (author)
  • Ferrari, C.Observatoire de la Cote d'Azur (author)
  • Fotopoulou, S.Durham University (author)
  • Guglielmo, V.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Istituto nazionale di astrofisica (INAF) (author)
  • Kolokythas, K.Inter-University Centre for Astronomy and Astrophysics (IUCAA) (author)
  • Pacaud, F.Universität Bonn,University of Bonn (author)
  • Pierre, M.Université Paris-Saclay,University Paris-Saclay (author)
  • Poggianti, B. M.Istituto nazionale di astrofisica (INAF) (author)
  • Ramos-Ceja, M. E.Universität Bonn,University of Bonn (author)
  • Raychaudhury, S.Inter-University Centre for Astronomy and Astrophysics (IUCAA) (author)
  • Rottgering, H.Universiteit Leiden (UL),Leiden University (UL) (author)
  • Vignali, CristianIstituto nazionale di astrofisica (INAF),Universita di Bologna,University of Bologna (author)
  • Chalmers tekniska högskolaUniversiteit Leiden (UL) (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences6200004-63611432-0746

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