Simple models of line profiles. a) Rotation kernel ℛ(v) with Vsini_⋆ = 15 km s^-1 in solid red, stellar line profile assuming β₀ = 2.6 km s^-1 in dashed green, subplanet line profile ℱ_pla(v) with β_p = 2.71 km s^-1 in dash-dotted blue. b) ℱ_transit = ℱ_star − fℱ_pla modeling an average line profile observed with HIRES in solid black, and a CCF observed with HARPS in dotted cyan. The same with β₀ = 4.5 km s^-1 and β_p = 4.56 km s^-1 represents a CCF observed by CORALIE, in dashed violet.