The disentangled spectra (gray lines) of Stars 1 (left) and 2 (right) with synthetic spectra (red lines) calculated with iSpec. Results are shown for seven spectral regions: (top–bottom) Fe I λ404.6 nm, Ca I λ422.6 nm, the G band with Fe I λ432.6 nm, Fe I λ438.3 nm, Hβ, Fe I λ495.7 nm, and Mg Ib.