Radial velocity of the stellar surface occulted by the planet for our three nights of observations. The vertical dashed lines represent the four contact points of the transit. The best solid-body rotation model is shown in orange. However, the vsurf are better modeled by a null stellar surface radial velocity (horizontal dashed line), i.e., with a nondetected Rossiter-McLaughlin effect. There is a presence of a correlated pattern, near the transit center and common to all nights, which remains unexplained.
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