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Fig. 5

image

Top panel: completeness (in %) of the WIRCam sources as a function of magnitude, based on the deep surveys UDS (blue) and VIDEO (red). The completeness is shown for WIRCam sources with various signal-to-noise ratio cuts (no cut: filled symbols; S/N> 3: dotted lines; S/N> 5: dashed lines). Bottom panel: completeness as a function of magnitude and colour (zK), colour-coded from red (100%) to blue (0%) based on the VIDEO survey. The yellow region delineates the 50% completeness level. The dashed line contours show the source density spaced with logarithmic scale of 0.3 dex. At KAB ≤ 20.6, the WIRCam sample is close to 100% completeness and the colour variations are due to small numbers.

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