Fig. 1
Distribution of the XXL-S X-ray point-like sources with optical counterparts considering all the redshifts (N = 3280; black dots) and sources with spectroscopic redshifts in the range 0.2 < z < 1.0 (N = 1592; open circles). The positions of the radio-selected X-ray point-like sources (RAD; N = 270) are marked with green triangles.
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