The XXL Survey: XXVII. The 3XLSS point source catalogue
  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 26056
objects in two areas of 25 deg2; (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.
