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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 <G < 11.8, 7.7 <K < 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 (RP = 0.99--1.45 RJ), have masses ranging from 0.92 to 5.26 MJ, and orbit F, G, and K stars (4766 ≤ Teff ≤ 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$^{+0.035}_{-0.038}$), TOI-2145 b (P = 10.261 d, e = $0.208^{+0.034}_{-0.047}$), and TOI-2497 b (P = 10.656 d, e = $0.195^{+0.043}_{-0.040}$). 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; $5.26^{+0.38}_{-0.37}$ MJ (TOI-2145 b) and 4.82 ± 0.41 MJ (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.more » « less
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Badenas-Agusti, Mariona ; Günther, Maximilian N. ; Daylan, Tansu ; Mikal-Evans, Thomas ; Vanderburg, Andrew ; Huang, Chelsea X. ; Matthews, Elisabeth ; Rackham, Benjamin V. ; Bieryla, Allyson ; Stassun, Keivan G. ; et al ( , The Astronomical Journal)null (Ed.)
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Vanderspek, Roland ; Huang, Chelsea X. ; Vanderburg, Andrew ; Ricker, George R. ; Latham, David W. ; Seager, Sara ; Winn, Joshua N. ; Jenkins, Jon M. ; Burt, Jennifer ; Dittmann, Jason ; et al ( , The Astrophysical Journal)