Abstract

We present the discovery and characterization of six short-period, transiting giant planets from NASA's Transiting Exoplanet Survey Satellite (TESS) -- TOI-1811 (TIC 376524552), TOI-2025 (TIC 394050135), TOI-2145 (TIC 88992642), TOI-2152 (TIC 395393265), TOI-2154 (TIC 428787891), and TOI-2497 (TIC 97568467). All six planets orbit bright host stars (8.9 < 11.8, 7.7 < 10.1). Using a combination of time-series photometric and spectroscopic follow-up observations from the TESS Follow-up Observing Program Working Group, we have determined that the planets are Jovian-sized (R-P = 0.99-1.45 R-J), have masses ranging from 0.92 to 5.26 M-J, and orbit F, G, and K stars (4766 <= T-eff <= 7360 K). We detect a significant orbital eccentricity for the three longest-period systems in our sample: TOI-2025 b (P = 8.872 d, 0.394(-0.038+0.035)), TOI-2145 b (P = 10.261 d, e = 0.208(-0.047)(+0.034)), and TOI-2497 b (P = 10.656 d, e = 0.195(-0.040)(+0.043)). TOI-2145 b and TOI-2497 b both orbit subgiant host stars (3.8 < log g <4.0), but these planets show no sign of inflation despite very high levels of irradiation. The lack of inflation may be explained by the high mass of the planets; 5.26(-0.37)(+0.38) M-J (TOI-2145 b) and 4.82 +/- 0.41 M-J (TOI-2497 b). These six new discoveries contribute to the larger community effort to use TESS to create a magnitude-complete, self-consistent sample of giant planets with well-determined parameters for future detailed studies.