Infrared component residuals into tSZ y-map (top panel) and r-map (bottom panel) as a function of the scale ℓ for a miss-estimation of infrared emission spectral properties. Color ranging from blue to red indicates the considered error on the thermal dust emission gray body spectral index, β_d, from –0.2 to 0.2. An intensity of 1 K_CMB at 195 GHz is used as a reference for the infrared emission.