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Another shipment of six short-period giant planets from TESS

2023; Oxford University Press; Volume: 521; Issue: 2 Linguagem: Inglês

10.1093/mnras/stad595

1365-2966

Joseph E. Rodriguez, Samuel N. Quinn, Andrew Vanderburg, George Zhou, Jason D. Eastman, Erica Thygesen, Bryson Cale, David R. Ciardi, Phillip A. Reed, Ryan J. Oelkers, Karen A. Collins, Allyson Bieryla, David W. Latham, Erica J. Gonzales, B. Scott Gaudi, C. Hellier, M. I. Jones, Rafael Brahm, K. V. Sokolovsky, Jack Schulte, Gregor Srdoč, John F. Kielkopf, Ferran Grau Horta, Bob Massey, Phil Evans, Denise C. Stephens, Kim K. McLeod, Nikita Chazov, V. Krushinsky, Mourad Ghachoui, B. S. Safonov, Cayla M. Dedrick, Dennis M. Conti, Didier Laloum, Steven Giacalone, Carl Ziegler, P. Guerra, R. Naves Nogues, F. Murgas, Edward J Michaels, G. Ricker, R. Vanderspek, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Brett C. Addison, Owen Alfaro, D. R. Anderson, E. Aydi, Thomas G. Beatty, T. R. Bedding, A. Belinski, Z. Benkhaldoun, P. Berlind, Cullen H. Blake, Michael Bowen, Brendan P. Bowler, Andrew W. Boyle, Dalton Branson, César Briceño, M. Calkins, Emma Campbell, Jessie L. Christiansen, Laura Chomiuk, Kevin I. Collins, Matthew Cornachione, A. Daassou, Courtney D. Dressing, Gilbert A. Esquerdo, Dax L. Feliz, W. Fong, Akihiko Fukui, Tianjun Gan, Holden Gill, Maria V. Goliguzova, Jarrod Hansen, Thomas Henning, Eric G. Hintz, Mélissa J. Hobson, Jonathan Horner, Chelsea X. Huang, D. J. James, Eric L. N. Jensen, Samson A. Johnson, Andrés Jordán, Stephen R. Kane, Khalid Barkaoui, Myung-Jin Kim, Kingsley Kim, Rudolf B. Kuhn, Nicholas M. Law, Pablo Lewin, Hui-Gen Liu, Michael B. Lund, Andrew W. Mann, Nate McCrady, Matthew W. Mengel, Jessica Mink, L. G. Murphy, Norio Narita, Patrick Newman, Jack Okumura, H. P. Osborn, Martin Paegert, Ε. Πάλλη, Joshua Pepper, Peter Plavchan, A. Popov, M. Rabus, Jessica A. Ranshaw, Jennifer A. Rodriguez, Dong-Goo Roh, Michael Reefe, Arjun B. Savel, Richard P. Schwarz, Avi Shporer, Robert J. Siverd, David H. Sliski, Keivan G. Stassun, Daniel J. Stevens, Abderahmane Soubkiou, Eric B. Ting, C. G. Tinney, Noah Vowell, Payton Walton, R. G. West, Maurice L. Wilson, Robert A. Wittenmyer, Justin M. Wittrock, Shania Wolf, Jason T. Wright, Hui Zhang, Evan Zobel,

Astronomy and Astrophysical Research

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.