Fig. 2

Histograms of χλ ≡ (FWISE − Fphot)/σtot, for the 12 and 22 μm bands, for sources with S/N > 3 in the respective bands.The KIC (350 objects in the W3 band and 31 in the W4 band) and known planets samples (61 objects in the W3 band and 21 in the W4 band) are shown in dark and light grey respectively. A gaussian distribution is fitted for the 12 μm band,(x0 = 0.5,σ = 1).
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