Spectroscopic orbit of planet DS Tuc A b. The instrumental offsets and the best-fit stellar activity signal (GP quasi-periodic model) have been subtracted from the HARPS and ESPRESSO original RVs. The error bars include the uncorrelated jitter terms added in quadrature to the formal uncertainties. The curve in red represents the best-fit Doppler signal (circular obit; K_b = 3.2 m s⁻¹).