Light curve & radial velocity of 4 giants planets

In this paper we report on the discovery of four gas giant planets that transit low-mass late K and early M dwarfs. The planets HATS-74Ab (TOI737b), HATS-75b (TOI552b), HATS-76b (TOI555b), and HATS-77b (TOI730b) were all discovered from the HATSouth photometric survey and follow-up using TESS and other photometric facilities.

We use the new ESPRESSO facility at the VLT to confirm systems and measure their masses. We find that these planets have masses of 1.46{+/-}0.14M_J_, 0.491{+/-}0.039M_J_, 2.629{+/-}0.089M_J_, and 1.374_-0.074_^+0.100^M_J_, respectively, and radii of 1.032{+/-}0.021R_J_, 0.884{+/-}0.013R_J_, 1.079{+/-}0.031R_J_, and 1.165{+/-}0.021R_J_, respectively. The planets all orbit close to their host stars with orbital periods ranging from 1.7319days to 3.0876days.