RV & light curves of 8 gas giant systems

Here we present ESPRESSO observations of the Rossiter-McLaughlin (RM) effect of eight warm gas giants, revealing that, independently of the eccentricities, all of them have relatively aligned orbits. Our five warm Jupiters (WASP-106 b, WASP-130 b, TOI-558 b, TOI-4515 b, and TOI-5027 b) have sky-projected obliquities |{lambda}|~0-10{deg}, while the two less massive warm Saturns (K2-139 b and K2-329 A b) are slightly misaligned, having |{lambda}|~15-25{deg}.

Furthermore, for K2-139 b, K2-329 A b, and TOI-4515 b, we also measure true 3D obliquities {psi}~15-30{deg}. We also report a nondetection of the RM effect produced by TOI-2179 b. Through hierarchical Bayesian modeling of the true 3D obliquities of hot and warm Jupiters, we find that around single stars warm Jupiters are statistically more aligned than hot Jupiters.