Comparison of infrared excess (IRX) 3-σ upper limits and stellar masses M_⋆ for our LBG candidates. Downward arrows have 1-σ length. From top to bottom panels: colors represent: photometric redshift (z_ph), magnification factor (μ), star formation rate (SFR), UV slope (β) and UV Luminosity (L_UV). Local IRX–M_⋆ relations presented in Sect. 2.13 are shown for reference. Blue crosses represent the two detections.