The 3XLSS point source catalogue


CHIAPPETTI L., FOTOPOULOU S., LIDMAN C., Faccioli L., PACAUD F., ELYIV A., ...More

ASTRONOMY & ASTROPHYSICS, vol.620, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 620
  • Publication Date: 2018
  • Doi Number: 10.1051/0004-6361/201731880
  • Journal Name: ASTRONOMY & ASTROPHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: surveys, X-rays: general, catalogs, SCALE STRUCTURE CATALOG, WIDE-FIELD SURVEY, X-RAY SOURCES, COSMOS FIELD, GALAXY, SELECTION, COUNTS
  • Istanbul University Affiliated: Yes

Abstract

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.