The IR LF of A1763. Filled and empty symbols represent the counts after and, respectively, before purity and completeness corrections. Counts have been multiplied by the fractions of non-AGN galaxies in each L_IR-bin (see Fig. 5) to remove the AGN contribution from the IR LF. Blue dots (respectively, red squares) represent the counts based on the z ∪ z_p (respectively, z) sample. 1σ error bars based on 100 bootstrap re-samplings are shown. The square symbols have been displaced by  − 0.02 in log L_IR for clarity. The vertical dash-dotted line indicates the L_IR lower limit (L_IR/L_⊙ = 2.5 × 10¹⁰) that corresponds to the 0.2 mJy flux density limit adopted for the determination of the IR LF. The solid blue (respectively dashed red) line represents the power-law best-fit to the IR LF represented by the blue filled dots (respectively, red squares) with L_IR/L_⊙ ≥ 2.5 × 10¹⁰.