Another shipment of six short-period giant planets from TESS. Issue 2 (28th February 2023)

• Record Type: Journal Article
• Authors: Rodriguez, Joseph E; Quinn, Samuel N; Vanderburg, Andrew; Zhou, George; Eastman, Jason D; Thygesen, Erica; Cale, Bryson; Ciardi, David R; Reed, Phillip A; Oelkers, Ryan J; Collins, Karen A; Bieryla, Allyson; Latham, David W; Gonzales, Erica J; Scott Gaudi, B; Hellier, Coel; Jones, Matías I; Brahm, Rafael; Sokolovsky, Kirill; Schulte, Jack; Srdoc, Gregor; Kielkopf, John; Grau Horta, Ferran; Massey, Bob; Evans, Phil; Stephens, Denise C; McLeod, Kim K; Chazov, Nikita; Krushinsky, Vadim; Ghachoui, Mourad; Safonov, Boris S; Dedrick, Cayla M; Conti, Dennis; Laloum, Didier; Giacalone, Steven; Ziegler, Carl; Guerra Serra, Pere; Naves Nogues, Ramon; Murgas, Felipe; Michaels, Edward J; Ricker, George R; Vanderspek, Roland K; Seager, Sara; Winn, Joshua N; Jenkins, Jon M; Addison, Brett; Alfaro, Owen; Anderson, D R; Aydi, Elias; Beatty, Thomas G; Bedding, Timothy R; Belinski, Alexander A; Benkhaldoun, Zouhair; Berlind, Perry; Blake, Cullen H; Bowen, Michael J; Bowler, Brendan P; Boyle, Andrew W; Branson, Dalton; Briceño, César; Calkins, Michael L; Campbell, Emma; Christiansen, Jessie L; Chomiuk, Laura; Collins, Kevin I; Cornachione, Matthew A; Daassou, Ahmed; Dressing, Courtney D; Esquerdo, Gilbert A; Feliz, Dax L; Fong, William; Fukui, Akihiko; Gan, Tianjun; Gill, Holden; Goliguzova, Maria V; Hansen, Jarrod; Henning, Thomas; Hintz, Eric G; Hobson, Melissa J; Horner, Jonathan; Huang, Chelsea X; James, David J; Jensen, Jacob S; Johnson, Samson A; Jordán, Andrés; Kane, Stephen R; Barkaoui, Khalid; Kim, Myung-Jin; Kim, Kingsley; Kuhn, Rudolf B; Law, Nicholas; Lewin, Pablo; Liu, Hui-Gen; Lund, Michael B; Mann, Andrew W; McCrady, Nate; Mengel, Matthew W; Mink, Jessica; Murphy, Lauren G; Narita, Norio; Newman, Patrick; Okumura, Jack; Osborn, Hugh P; Paegert, Martin; Palle, Enric; Pepper, Joshua; Plavchan, Peter; Popov, Alexander A; Rabus, Markus; Ranshaw, Jessica; Rodriguez, Jennifer A; Roh, Dong-Goo; Reefe, Michael A; Savel, Arjun B; Schwarz, Richard P; Shporer, Avi; Siverd, Robert J; Sliski, David H; Stassun, Keivan G; Stevens, Daniel J; Soubkiou, Abderahmane; Ting, Eric B; Tinney, C G; Vowell, Noah; Walton, Payton; West, R G; Wilson, Maurice L; Wittenmyer, Robert A; Wittrock, Justin M; Wolf, Shania; Wright, Jason T; Zhang, Hui; Zobel, Evan;
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 521:Issue 2(2023)
• Page Start: 2765
• Page End: 2785
• Publication Date: 2023-02-28
• Subjects: techniques: radial velocities -- techniques: photometric; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/stad595
• Languages: English
• ISSNs: 0035-8711

Abstract

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.