Toppanels: RVs (black dots) for CoRoT 7 estimated using a SN and a Normal fit. Bottom panels: residuals from the model fit using Eq. (5) (New corr. std–black dots) and the residuals from the usual correction (Usual corr. std–blue triangles), based on RV_activity = β₀ + β₁γ + β₂SN FWHM for the SN fitand on RV_activity = β₀ + β₁BIS SPAN + β₂FWHM for the Normal fit. The residuals have a smaller systematic component when using the proposed model of Eq. (5) (black dots) compared to the usual model (blue triangles). Moreover, once corrected for stellar activity using Eq. (5), the remaining standard deviation from the SN models are 0.334 m s⁻¹ smaller than the remaining standard deviation of the Normal model.