TOI-2046b, TOI-1181b, and TOI-1516b, three new hot Jupiters from TESS : planets orbiting a young star, a subgiant, and a normal star

Summary, in English

We present the confirmation and characterization of three hot Jupiters, TOI-1181b, TOI-1516b, and TOI-2046b, discovered by the TESS space mission. The reported hot Jupiters have orbital periods between 1.4 and 2.05 d. The masses of the three planets are 1.18 ± 0.14 MJ, 3.16 ± 0.12 MJ, and 2.30 ± 0.28 MJ, for TOI-1181b, TOI-1516b, and TOI-2046b, respectively. The stellar host of TOI-1181b is a F9IV star, whereas TOI-1516b and TOI-2046b orbit F main sequence host stars. The ages of the first two systems are in the range of 2-5 Gyrs. However, TOI-2046 is among the few youngest known planetary systems hosting a hot Jupiter, with an age estimate of 100-400 Myrs. The main instruments used for the radial velocity follow-up of these three planets are located at Ondřejov, Tautenburg, and McDonald Observatory, and all three are mounted on 2-3 m aperture telescopes, demonstrating that mid-aperture telescope networks can play a substantial role in the follow-up of gas giants discovered by TESS and in the future by PLATO.

• Author: Petr Kabáth; Judith Korth; Joshua N. Winn
• Publishing year: 2022-07-01
• Language: English
• Pages: 5955-5972
• Publication/Series: Monthly Notices of the Royal Astronomical Society
• Volume: 513
• Issue: 4
• Links: http://dx.doi.org/10.1093/mnras/stac1254
• Document type: Journal article
• Publisher: Oxford University Press
• Topic: Astronomy, Astrophysics and Cosmology
• Keywords: planets and satellites: detection; stars: individual: TOI-1181, TOI-1516, TOI-2046; techniques: radial velocities; techniques: spectroscopic
• Status: Published
• ISBN/ISSN/Other: ISSN: 0035-8711