MASCARA-1b cross-correlation results obtained with atmospheric models of different species computed with petitRADTRANS. Each row shows the results for one species. Left column: cross-correlation maps. The first and last contacts of the transit are shown in horizontal dashed white lines. The light cyan region shows the planet radial-velocity paths considering the different possible υ_sys values for this star (~3–11 km s⁻¹) based on literature measurements and the calculations performed here and the dashed blue line indicates the radial-velocity path of the Doppler shadow. Middle column: K_p − υ_sys map. The horizontal dashed line indicates the expected K_p at 204.2 km s⁻¹. The colour bar shows the S/N. Right column: combined in-transit CCFs after correcting the planet radial velocities. The horizontal grey dashed lines indicate the ±3σ level. The radial velocities (horizontal axis) of these results do not consider the systemic velocity correction. The strong features observed in the Fe I, Fe II, and Ca I panels correspond to the Doppler shadow.