Another shipment of six short-period giant planets from TESS
Another shipment of six short-period giant planets from TESS
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来自 TESS 的另一批六颗短周期巨行星
DOI:
10.1093/mnras/stad595
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发表时间:
2023
影响因子:
4.8
通讯作者:
Oelkers, Ryan J
中科院分区:
文献类型:
--
作者:
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
We present the discovery and characterization of six short-period, transiting giant planets from NASA’sTransiting 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 theTESSFollow-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), TOI-2145 b (P= 10.261 d,e=), and TOI-2497 b (P= 10.656 d,e=). 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;MJ(TOI-2145 b) and 4.82 ± 0.41 MJ(TOI-2497 b). These six new discoveries contribute to the larger community effort to useTESSto create a magnitude-complete, self-consistent sample of giant planets with well-determined parameters for future detailed studies.