Radio continuum sources behind LMC Virtual Observatory Resource

Authors
  1. Filipovic M.D.
  2. Bojicic I.S.
  3. Grieve K.R.
  4. Norris R.P.
  5. Tothill N.F.H.,Shobhana D.
  6. Rudnick L.
  7. Prandoni I.
  8. Andernach H.
  9. Hurley-Walker N.,Alsaberi R.Z.E.
  10. Anderson C.S.
  11. Collier J.D.
  12. Crawford E.J.
  13. For B.-Q.,Galvin T.J.
  14. Haberl F.
  15. Hopkins A.M.
  16. Ingallinera A.
  17. Kavanagh P.J.,Koribalski B.S.
  18. Kothes R.
  19. Leahy D.
  20. Leverenz H.
  21. Maggi P.
  22. Maitra C.,Marvil J.
  23. Pannuti T.G.
  24. Park L.A.F.
  25. Payne J.L.
  26. Pennock C.M.
  27. Riggi S.,Rowell G.
  28. Sano H.
  29. Sasaki M.
  30. Staveley-Smith L.
  31. Trigilio C.
  32. Umana G.,Urosevic D.
  33. Van Loon J.T.
  34. Vardoulaki E.
  35. Published by
    CDS
Abstract

We present a comprehensive multifrequency catalogue of radio sources behind the Large Magellanic Cloud (LMC) between 0.2 and 20GHz, gathered from a combination of new and legacy radio continuum surveys. This catalogue covers an area of ~144deg^2^ at angular resolutions from 45 arcsec to ~3 arcmin. We find 6434 discrete radio sources in total, of which 3789 are detected at two or more radio frequencies. We estimate the median spectral index ({alpha}; where S_v_~{nu}^{alpha}^) of {alpha}=-0.89 and mean of -0.88+/-0.48 for 3636 sources detected exclusively at two frequencies (0.843 and 1.384GHz) with similar resolution [full width at half-maximum (FWHM) ~40-45 arcsec]. The large frequency range of the surveys makes it an effective tool to investigate Gigahertz Peak Spectrum (GPS), Compact Steep Spectrum (CSS), and Infrared Faint Radio Source (IFRS) populations within our sample. We find 10 GPS candidates with peak frequencies near 5GHz, from which we estimate their linear size. 1866 sources from our catalogue are CSS candidates with {alpha}<-0.8. We found six candidates for High Frequency Peaker (HFP) sources, whose radio fluxes peak above 5GHz and no sources with unconstrained peaks and {alpha}>0.5. We found optical counterparts for 343 of the radio continuum sources, of which 128 have a redshift measurement. Finally, we investigate the population of 123 IFRSs found in this study.

Keywords
  1. Magellanic Clouds
  2. Radio continuum emission
Bibliographic source Bibcode
2021MNRAS.507.2885F
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/507/2885
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/507/2885

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/507/2885
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/507/2885
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/507/2885
IVOA Table Access TAP
http://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).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/507/2885/table4?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/507/2885/table4?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/507/2885/table4?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/507/2885/table5?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/507/2885/table5?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/507/2885/table5?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/507/2885/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/507/2885/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/507/2885/table3?

History

2022-02-04T09:18:04Z
Resource record created
2022-02-04T09:18:04Z
Created
2022-10-14T13:05:53Z
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