X-ray AGN fraction versus M_* threshold for different star-forming galaxy populations. The top panels display the SFR vs M_* plots for galaxies in the MQN01 (red dots) and Spiderweb (green dots) regions. The Spiderweb data were obtained by Shimakawa et al. (2024) (left panel), Pérez-Martínez et al. (2023) (middle panel), and Pannella et al. (in prep.) (right panel). The shaded areas represent the Popesso et al. (2023) main sequence (MS) with a ±0.3 dex spread at redshifts z = 3.25 (red) and z = 2.16 (green). Galaxies hosting an X-ray AGN are highlighted with black-edged squares. The bottom panels show the variation of f_AGN as a function of the M_* threshold, as indicated by the grid of values on the x-axis.