Top: RV observations of HATS-37 plotted against time. The solid line shows the best-fit model including a linear trend and the Keplerian orbital variation of the host star due to the planet HATS-37Ab. As in Figure 1, the RV model plotted here is not corrected for dilution from the unresolved stellar component HATS-37B. The corrected semiamplitude of the orbit is ∼20% larger than what is shown. Bottom: RV residuals from the best-fit model plotted against time.