Phase-folded RVs in the B, V, and R bands for SOPHIE (yellow points) and in the Y, J, H, and K bands for SPIRou (red points). The best sinusoidal fit per band is given in a continuous line following the same color convention. For comparison, in each panel, we include (blue color) the phase-folded RVs and sinusoidal fit obtained in the full SOPHIE range. For the sinusoidal fit and RV phase-folding, the phase (i.e., T₀) and period (2.23 days) are the same for all the time series. It is important to note that although a sinusoidal fit is possible in the SPIRou data, the periodograms show that there is no signal at the 2.23 day period (see Figure A.6). The SPIRou data are compatible with a straight line with K = 0 m s⁻¹. The sinusoidal fit to the SPIRou data enabled us to set an upper limit on the RV dispersion that is smaller than the rms value.