The LOFAR HBA Virgo Cluster Survey Virtual Observatory Resource

Authors
  1. Edler H.W.
  2. de Gasperin F.
  3. Shimwell T.W.
  4. Hardcastle M.J.
  5. Boselli A.,Heesen V.
  6. McCall H.
  7. Bomans D.J.
  8. Brueggen M.
  9. Bulbul E.
  10. Chyzy K.T.,Ignesti A.
  11. Merloni A.
  12. Pacaud F.
  13. Reiprich T.H.
  14. Roberts I.D.,Rottgering H.J.A.
  15. van Weeren R.J.
  16. Published by
    CDS
Abstract

The Virgo cluster is the nearest (d=16.5Mpc) massive (M>=1*19^14^M_{sun}_) galaxy cluster and thus a prime target to study astrophysical processes in dense large-scale environments. In the radio band, we can probe the non-thermal components of the inter-stellar medium (ISM), intracluster-medium (ICM) and of active galactic nuclei (AGN). This allows an investigation of the impact of the environment on the evolution of galaxies and the contribution of AGN to the ICM-heating. With the ViCTORIA (Virgo Clustermulti-Telescope Observations in Radio of Interacting galaxies and AGN) project, we are carrying out multiple wide-field surveys of the Virgo cluster at different frequencies. We aim to investigate the impact of the environment on the evolution of galaxies and the contribution of AGN to the ICM-heating, from the inner cluster regions out to beyond the virial radius. We perform a survey of the cluster at 120-168MHz using the LOw-Frequency ARray (LOFAR). We image a 132deg^2^ region of the cluster, reaching an order of magnitude greater sensitivity than existing wide-field radio surveys of this field at three times higher spatial resolution compared to other low-frequency observations. We developed a tailored data processing strategy to subtract the bright central radio galaxy M 87 from the data. This allowed us to correct for the systematic effects due to ionospheric variation as a function of time and direction. In the final mosaic with a resolution of 9"x5", we reach a median noise level of 140uJy/beam inside the virial radius and 280uJy/beam for the full area. We detect 112 Virgo member galaxies and 114 background galaxies. In at least 18 cases, the radio morphology of the cluster member galaxies shows clear signs of ram-pressure stripping. This includes three previously unreported candidates. In addition, we reveal for the first time 150kpc long tails from a previous epoch of AGN activity for NGC 4472 (M 49).While no cluster-scale diffuse radio sources are discovered, we find the presence of an extended radio signature of the W'-group. This feature is coincident with an X-ray filament detected with SRG/eROSITA in the outskirts of the cluster. We speculate that this emission is synchrotron radiation which could be related to shocks or turbulence from accretion processes. The data published in this paper serve as a valuable resource for future studies. In the follow-up work of the ViCTORIA project, we will rely on them for an analysis of environmental effects on the radio-properties of star-forming galaxies in Virgo.

Keywords
  1. galaxy-clusters
  2. radio-galaxies
  3. radio-continuum-emission
Bibliographic source Bibcode
2023A&A...676A..24E
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/676/A24
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/676/A24
Document Object Identifer DOI
doi:10.26093/cds/vizier.36760024

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/676/A24
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/676/A24
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/676/A24
IVOA Table Access TAP
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IVOA Cone Search SCS
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https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/676/A24/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/676/A24/table3?
IVOA Cone Search SCS
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http://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/676/A24/table4?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/676/A24/table4?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/676/A24/table4?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
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History

2023-08-01T09:15:53Z
Resource record created
2023-08-01T09:15:53Z
Created
2023-11-03T13:06:56Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr