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Fig. 2.

image

SPIRou radial velocities of AU Mic. Blue triangles show the RVs obtained from CCF matching the original CCFs, and filled circles show the RVs obtained from CCF matching the median-filtered CCFs. Red circles show data masked by our 2.5σ clip. Vertical lines show the predicted start, center, and end of the transit. The green line shows the best-fit model and the thin red lines show models for 100 randomly selected MCMC samples. The gray dashed line shows best-fit slope of 149 ± 9 m s−1 d−1 with an arbitrary vertical offset for visualization, and the orange points show the SPIRou instrumental drift (also with an arbitrary offset), and illustrate its dispersion of just 0.51 m s−1.

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