The XXL Survey: XXVII. The 3XLSS point source catalogue
L. Chiappetti, S. Fotopoulou, C. Lidman, L. Faccioli, F. Pacaud, A., Elyiv, S. Paltani, M. Pierre, M. Plionis, C. Adami, S. Alis, B. Altieri, I., Baldry, M. Bolzonella, A. Bongiorno, M. Brown, S. Driver, E. Elmer, P., Franzetti, M. Grootes, V. Guglielmo, A. Iovino
TL;DR
This paper releases the XXL Survey's comprehensive X-ray point source catalog, including multiwavelength counterparts and spectroscopic redshifts, providing a valuable resource for astrophysical research.
Contribution
It introduces the latest version of the XXL Survey's point source catalog with multiwavelength data and spectroscopic redshifts, enhancing data accessibility and scientific utility.
Findings
Catalog contains 26,056 X-ray sources in two 25 deg² areas.
Includes multiwavelength counterparts in infrared, optical, ultraviolet.
Provides spectroscopic redshifts for sources in the southern XXL area.
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 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.
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