MAVERIC radio continuum sources from 26 GCs Virtual Observatory Resource

Authors
  1. Tudor V.
  2. Miller-Jones J.C.A.
  3. Strader J.
  4. Bahramian A.
  5. Shishkovsky L.,Plotkin R.M.
  6. Chomiuk L.
  7. Heinke C.O.
  8. Maccarone T.J.
  9. Sivakoff G.R.,Tremou E.
  10. Anderson G.E.
  11. Russell T.D.
  12. Tzioumis A.K.
  13. Published by
    CDS
Abstract

Radio continuum observations offer a new window on compact objects in globular clusters compared to typical X-ray or optical studies. As part of the MAVERIC survey, we have used the Australia Telescope Compact Array to carry out a deep (median central noise level ~= 4 mJy beam^-1^) radio continuum survey of 26 southern globular clusters at central frequencies of 5.5 and 9.0 GHz. This paper presents a catalogue of 1285 radio continuum sources in the fields of these 26 clusters. Considering the surface density of background sources, we find significant evidence for a population of radio sources in seven of the 26 clusters, and also identify at least 11 previously known compact objects (six pulsars and five X-ray binaries). While the overall density of radio continuum sources with 7.25-GHz flux densities ~> 20 mJy in typical globular clusters is relatively low, the survey has already led to the discovery of several exciting compact binaries, including a candidate ultracompact black hole X-ray binary in 47 Tuc. Many of the unclassified radio sources near the centres of the clusters are likely to be true cluster sources, and multiwavelength follow-up will be necessary to classify these objects and better understand the demographics of accreting compact binaries in globular clusters.

Keywords
  1. globular-star-clusters
  2. radio-continuum-emission
  3. radio-sources
  4. photometry
  5. astrometry
  6. stellar-distance
Bibliographic source Bibcode
2022MNRAS.513.3818T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/513/3818
IVOA Identifier IVOID
ivo://CDS.VizieR/J/MNRAS/513/3818

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/513/3818
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/513/3818
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/513/3818
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http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
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https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/513/3818/cluster?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/513/3818/cluster?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/513/3818/cluster?
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/513/3818/table4?
https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/513/3818/table4?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/513/3818/table4?

History

2025-02-26T16:16:46Z
Resource record created
2025-02-26T15:32:33Z
Updated
2025-02-26T16:16:46Z
Created

Contact

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CDS support team
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