Colour-magnitude diagrams of 47 Tuc and the SMC using JWST filters. (a) m_F150W2 versus m_F150W2 − m_F322W2 CMD. (b) m_F322W2 versus m_F150W2 − m_F322W2 CMD. (c) Same as (b), but with overlaid the expected mass values (in red) and expected T_eff values (in blue), based on model isochrones from Gerasimov et al. (2024b) and discussed in Sect. 5, specifically the G24R model isochrones (see Sect. 5 for further details). The red fiducial line was manually defined to mark the position of the SMC MS on the CMD. In all panels, black dots represent stars that satisfy all selection criteria, while light grey dots indicate stars that do not meet the QFIT or rmsSKY criteria. Dark grey dots denote stars that pass the QFIT and rmsSKY criteria but do not satisfy the RADXS selection.