Document Type
Article
Publication Date
5-2023
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.
Recommended Citation
Joseph E Rodriguez and others, Another shipment of six short-period giant planets from TESS, Monthly Notices of the Royal Astronomical Society, Volume 521, Issue 2, May 2023, Pages 2765–2785, https://doi.org/10.1093/mnras/stad595
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Title
Monthly Notices of the Royal Astronomical Society
DOI
https://doi.org/10.1093/mnras/stad595
Comments
Copyright 2022 the Authors.