Synthetic XRISM-Resolve spectra produced using the model by Sapienza et al. (2024a) with the addition of the expected Scandium line for the year 2025, and with updated RMF and ARF including the effects of the closed gate valve (Sapienza et al. 2024b). Dotted lines show the different components of the best-fit model. The exposure time is 400 ks. Upper panel: spectrum synthesized including the best-fit Gaussian component with a line width corresponding to a Doppler broadening of 1000 km s⁻¹. Lower panel: same as for the upper panel, but for a Doppler broadening of 2000 km s⁻¹.