Fig. B.2
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Left: Second-order derivative of the velocity (top) and its respective periodogram (bottom). Right: Differential temperature metric (top) and its periodogram (bottom). Both quantities are stellar activity indicators reported as part of the standard LBL RV extraction process (Artigau et al. 2022, 2024) for NIRPS and show no clear peaks in the periodogram that might correspond to any activity signal.
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