HARPS ℓ Car CCFs computed with our four depth-dependent correlation templates on the green λ range. Left: example of the four CCFs corresponding to a same spectrum and our four respective templates. Middle: CCF quality factor Q of ℓ Car vs. pulsation phase (ϕ) for CCFs built based on our four templates (same colour code). Right: same, but for our CCF signal estimator S/NCCF.
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