Zoom into the MEG spectrum (at HWHM resolution) at the energy of the Mg xi and Si xiii triplets. The emission component is modeled with a thermal emission model (green dotted line) and a photoionized emitter, which is modeled with an xstar grid (blue dotted line). The upper panel shows the Mg xi region, where the mekal component can reproduce the profile with a weak contribution from the xstar emission component. The lower panel shows that the Si xiii triplet as well as the Si xiv Lyα are mainly accounted for by the photoionized emiter component (blue dotted line), while the thermal emission component accounts for the residual emission at the energy of the resonance emission line of the Si xiii triplet. In both panels the red line shows the best-fit model where the emission line component is accounted for by a collisional gas (mekal) and photoionzed emitter (xstar; see Sect. 4.1.2).