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We report the confirmation and characterisation of TOI-1820~b, TOI-2025~b,and TOI-2158~b, three Jupiter-sized planets on short-period orbits aroundG-type stars detected by TESS. Through our ground-based efforts using the FIESand Tull spectrographs, we have confirmed these planets and characterised theirorbits, and find periods of around $4.9$~d, $8.9$~d, and $8.6$~d forTOI-1820~b, TOI-2025~b, and TOI-2158~b, respectively. The sizes of the planetsrange from 0.96 to 1.14 Jupiter radii, and their masses are in the range from0.8 to 4.4 Jupiter masses. For two of the systems, namely TOI-2025 andTOI-2158, we see a long-term trend in the radial velocities, indicating thepresence of an outer companion in each of the two systems. For TOI-2025 wefurthermore find the star to be well-aligned with the orbit, with a projectedobliquity of $9^{+33}_{-31}$~$^\circ$. As these planets are all found inrelatively bright systems (V$\sim$10.9-11.6 mag), they are well-suited forfurther studies, which could help shed light on the formation and migration ofhot and warm Jupiters.

Confirmation and characterisation of three giant planets detected by TESS from the FIES/NOT and Tull/McDonald spectrographs