MeerKaT radio sources subset in G4Jy survey Virtual Observatory Resource

Authors
  1. Sejake P.K.
  2. White S.V.
  3. Heywood I.
  4. Thorat K.
  5. Bester H.L.
  6. Makhathini S.,Fanaroff B.
  7. Published by
    CDS
Abstract

We present the results from studying 140 radio sources in the GLEAM (GaLactic and Extragalactic All-sky MWA [Murchison Widefield Array]) 4-Jy (G4Jy) Sample. These sources were followed-up with MeerKAT to assess their radio morphology and enable host-galaxy identification, as existing radio images of 25 to 45-arcsec resolution do not provide sufficient information. We refer to these sources as the MeerKAT-2019 subset. The aim is to identify the host galaxy of these sources by visually inspecting the overlays comprising radio data from four surveys (at 150, 200, 843/1400, and 1300 MHz). Our morphological classification and host- galaxy identification relies upon the ~7-arcsec resolution images from MeerKAT (1300 MHz). Through the visual inspection of the overlays, 14 radio sources in the MeerKAT-2019 subset have wide-angle tail morphology, 10 are head-tail, and 5 have X-, S-/Z-shaped morphology. Most of the remaining sources have the radio morphology of typical symmetric lobes. Of 140 sources, we find host galaxies for 98 sources, leaving 42 with no identified host galaxy. These 42 sources still have ambiguous identification even with higher resolution images from MeerKAT.

Keywords
  1. radio-sources
  2. galaxies
  3. photometry
  4. spectroscopy
  5. redshifted
  6. astronomical-reference-materials
  7. astrometry
  8. galaxy-classification-systems
Bibliographic source Bibcode
2023MNRAS.518.4290S
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/518/4290
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/518/4290

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/518/4290
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/518/4290
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/518/4290
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/518/4290/tablea1?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/518/4290/tablea1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/518/4290/tablea1?

History

2026-03-05T13:12:23Z
Resource record created
2026-03-05T12:14:42Z
Updated
2026-03-05T13:12:23Z
Created

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