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Fig. 6

image

Radial velocity semi-amplitude K induced by stellar activity (K of activity signal defined as the slope of the RVi vs. RVm correlation times the RV semi-amplitude observed in the RVm) as a function of the line depth for our four selection of lines: correlated lines (red dots), unblended (blue dots), symmetric (green dots), and symmetric-unblended (black dots). The colour encodes the Pearson coefficient . The different curves, from bottom to top, represent the lower envelope of the correlated lines (left bottom panel) taking as threshold and 0.4, respectively.Top: Fe I lines. Bottom: all species.

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