Fig. 3.

Section of a normalised spectrum template used to build masks (solid black data points and line), minima found in the template (dashed blue line), and mask containing the minima selected based on some conditions (solid orange lines) for three stars of different spectral type and low v sin i: HD 238090 (M0.0 V; GJ 458A, Karmn J12123+544S; top panel), Luyten’s star (M3.5 V; GJ 273, Karmn J07274+052; middle panel), and Teegarden’s star (M7.0 V; Karmn J02530+168; bottom panel). The three targets are Doppler-shifted to the same reference frame.
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