Fig. 9.

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JH 223 radial velocities (top) and residuals (bottom). Radial velocities were derived from the first-order moment of the Stokes I LSD profiles of the SPIRou observations (black dots) and from spectral fitting of GRACES (red dot) and Keck spectra (green dots). The blue curve represents the sinusoidal fit with the rotational period fixed at 3.31days. Residuals (squares), computed as the difference between the RV values and the sinusoidal fit, have a standard deviation of 0.27km/s.
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