Near-IR and optical radial velocities of the active M dwarf star Gl 388 (AD Leo) with SPIRou at CFHT and SOPHIE at OHP - A 2.23 day rotation period and no evidence for a corotating planet

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Fig. 8

Generalized Lomb-Scargle periodogram and window function of the SPIRou B_ℓ time series. A long-term variation of the B_ℓ data set was filtered out beforehand to prevent it from perturbing the period analysis. The highly significant peak (FAP< 0.01%) at 2.23 ± 0.01 days matches the rotation period reported in the literature and the period observed in the SOPHIE RV data.

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