The Galactic Bulge Survey: X-ray observations Virtual Observatory Resource

Authors
  1. Jonker P.G.
  2. Bassa C.G.
  3. Nelemans G.
  4. Steeghs D.
  5. Torres M.A.P.,Maccarone T.J.
  6. Hynes R.I.
  7. Greiss S.
  8. Clem J.
  9. Dieball A.
  10. Mikles V.J.,Britt C.T.
  11. Gossen L.
  12. Collazzi A.C.
  13. Wijnands R.
  14. In't Zand J.J.M.,Mendez M.
  15. Rea N.
  16. Kuulkers E.
  17. Ratti E.M.
  18. van Haaften L.M.
  19. Heinke C.,Ozel F.
  20. Groot P.J.
  21. Verbunt F.
  22. Published by
    CDS
Abstract

We introduce the Galactic Bulge Survey (GBS) and we provide the Chandra source list for the region that has been observed to date. Among the goals of the GBS are constraining the neutron star (NS) equation of state and the black hole (BH) mass distribution via the identification of eclipsing NS and BH low-mass X-ray binaries (LMXBs). The GBS targets two strips of 6{deg}x1{deg} (12deg^2^ in total), one above (1{deg}<b<2{deg}) and one below (-2{deg}<b<-1{deg}) the Galactic plane in the direction of the Galactic center at both X-ray and optical wavelengths. By avoiding the Galactic plane (-1{deg}<b<1{deg}) we limit the influence of extinction on the X-ray and optical emission but still sample relatively large number densities of sources. The survey is designed such that a large fraction of the X-ray sources can be identified from their optical spectra. The X-ray survey, by design, covers a large area on the sky while the depth is shallow using 2ks per Chandra pointing. In this way we maximize the predicted number ratio of (quiescent) LMXBs to cataclysmic variables. The survey is approximately homogeneous in depth to a 0.5-10keV flux of 7.7x10^-14^erg/cm^2^/s. So far, we have covered about two-thirds (8.3deg^2^) of the projected survey area with Chandra providing over 1200 unique X-ray sources. We discuss the characteristics and the variability of the brightest of these sources.

Keywords
  1. x-ray-binary-stars
  2. surveys
Bibliographic source Bibcode
2011ApJS..194...18J
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/194/18
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/194/18
Document Object Identifer DOI
doi:10.26093/cds/vizier.21940018

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/194/18
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/194/18
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/194/18
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/ApJS/194/18/table3?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/194/18/table3?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/194/18/table3?

History

2014-01-14T14:49:47Z
Resource record created
2014-01-14T14:49:47Z
Created
2018-01-30T07:18:08Z
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