Left panel: spectroscopic vs. photometric redshifts for the 21 cluster fields. Outliers, objects for which |Δz|> 0.15, are marked in red. The outlier fraction is 3.5%, the scatter of the remaining objects is σz = 0.029. Right panel: scatter in Δz as a function of Ks-band magnitude, for sources with 0.5 < zspec < 0.7. Quiescent and star-forming galaxies are marked in red and blue, respectively. The source detection limits of the 21 Ks-band stacks are indicated.
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