Estimated dust mass vs. redshift for the considered galaxy samples as labeled. For high-z QSO hosts, dust masses have been estimated from Eq. (2) assuming T_d = 47 K if T_min < 47 K or T_d = 1.2T_min if T_min > 47 K (see text for details). For the ASPECS and COSMOS samples, the original dust masses derived through SED-fitting (MAGPHYS) are plotted as open symbols, and those derived from a single MBB with T_d = 47 K as filled symbols. The dashed curve shows the dust mass limit corresponding to a flux density of 30 μJy at 1.2 mm (i.e., the ∼3σ detection limit in ASPECS) from Eq. (2) assuming T_d = 47 K.