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Published January 1, 2018 | Version v1
Journal article Open

The 3XLSS point source catalogue

Creators

  • 1. INAF, IASF Milano, Via Bassini 15, I-20133 Milan, Italy
  • 2. Univ Geneva, Dept Astron, Ch Ecogia 16, CH-1290 Versoix, Switzerland
  • 3. Australian Astron Observ, N Ryde, NSW 2113, Australia
  • 4. Univ Paris Diderot, Sorbonne Paris Cite, Univ Paris Saclay, CNRS,CEA,AIM, F-91191 Gif Sur Yvette, France
  • 5. Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany
  • 6. Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
  • 7. Istanbul Univ, Fac Sci, Dept Astron & Space Sci, TR-34119 Istanbul, Turkey
  • 8. European Space Astron Ctr ESA ESAC, Villanueva Canada, Madrid 28692, Spain
  • 9. Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England
  • 10. INAF, Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy
  • 11. INAF, Osservatorio Astron Roma, Via Frascati 33, I-00078 Monte Porzio Catone, Italy
  • 12. Monash Univ, Clayton, Vic 3800, Australia
  • 13. Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
  • 14. Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

Description

We present the version of the point source catalogue of the XXL Survey that was used, in part, in the first series of XXL papers. In this paper we release, in our database in Milan and at CDS: (i) the X-ray source catalogue with 26 056 objects in two areas of 25 deg(2) with a flux limit (at 3 sigma) of similar to 10 15 erg s(-1) cm(-2) in [0.5-2] keV, and similar to 3 x 10(-15) erg s(-1) cm(-2) in [2-10] keV, yielding a 90% completeness limit of 5.8 x 10(-15) and 3.8 x 10(-14) respectively; (ii) the associated multiwavelength catalogues with candidate counterparts of the X-ray sources in the infrared, near-infrared, optical, and ultraviolet (plus spectroscopic redshift when available); and (iii) a catalogue of spectroscopic redshifts recently obtained in the southern XXL area. We also present the basic properties of the X-ray point sources and their counterparts. Other catalogues described in the second series of XXL papers will be released contextually, and will constitute the second XXL data release.

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