Model spectra, CCF maps, and K_p maps for OH, Fe, and both species combined. Left panel shows the model spectra after continuum removal. Middle panel displays the CCF map in the stellar rest frame (i.e. corrected for BERV and systemic velocity). The dashed cyan line represents the planetary RV derived from the expected value of K_p. Right panela presents the K_p map for each molecule. The dashed lines intersecting at the cross mark indicate the position of the S/N peak. The colour bar represents the S/N values.