We present the new discovery of three new transiting hot-Jupiters by the WASP-South project , WASP-161 b , WASP-163 b and WASP-170 b .
Follow-up radial velocities obtained with the Euler/CORALIE spectrograph and transit light-curves obtained with the TRAPPIST-North , TRAPPIST-South , SPECULOOS-South , NITES , and Euler telescopes have enabled us to determine the masses and radii for these transiting exoplanets .
WASP-161 b completes an orbit around its V = 11.1 F6V-type host star in 5.406 days , and has a mass M _ { p } = 2.5 \pm 0.2 M _ { Jup } and radius R _ { p } = 1.14 \pm 0.06 R _ { Jup } .
WASP-163 b orbiting around its host star ( spectral type G8V and the magnitude V = 12.5 ) each 1.609 days , and has a mass M _ { P } = 1.9 \pm 0.2 M _ { Jup } and a radius R _ { p } = 1.2 \pm 0.1 R _ { Jup } .
WASP-170 b has a mass of 1.7 \pm 0.2 M _ { Jup } and a radius of 1.14 \pm 0.09 R _ { Jup } , is on a 2.344 days orbit around a G1V-type star of magnitude V = 12.8 .
Given their irradiations ( \sim 10 ^ { 9 } erg.s ^ { -1 } .cm ^ { -2 } ) and masses , the three new planets ’ sizes are in the good agreement with classical models of irradiated giant planets .