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This article has an erratum: [https://doi.org/10.1051/0004-6361/201732442e]


Fig. 3.

image

Fraction of spurious sources at a given S/N. We display curves for A2744, MACS J0416, and MACS J1149 in red, green, and blue, respectively. A vertical dotted line indicates our S/N threshold of 4.5.

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