The TESS Grand Unified Hot Jupiter Survey. III. Thirty More Giant Planets

TL;DR

This paper reports the discovery and confirmation of 30 new transiting hot Jupiters around bright FGK stars from TESS data, providing valuable data for understanding giant planet populations.

Contribution

It presents 30 newly confirmed hot Jupiters with detailed follow-up, expanding the known sample around bright stars and measuring their masses and eccentricities.

Findings

30 new hot Jupiters discovered and confirmed.

Planets have masses from 0.17 to 3.3 Jupiter masses.

Two planets show significant orbital eccentricities.

Abstract

We present the discovery of 30 transiting giant planets that were initially detected using data from NASA's Transiting Exoplanet Survey Satellite (TESS) mission. These new planets orbit relatively bright ($G \leq 12.5$) FGK host stars with orbital periods between 1.6 and 8.2 days, and have radii between 0.9 and 1.7 Jupiter radii. We performed follow-up ground-based photometry, high angular-resolution imaging, high-resolution spectroscopy and radial velocity monitoring for each of these objects to confirm that they are planets and determine their masses and other system parameters. The planets' masses span more than an order of magnitude ($0.17\,M_J < M_p < 3.3\,M_J$). For two planets, TOI-3593 b and TOI-4961 b, we measured significant non-zero eccentricities of $0.11^{+0.05}_{-0.03}$ and $0.18^{+0.04}_{-0.05}$ respectively, while for the other planets, the data typically provide a 1-$\sigma$ upper bound of 0.15 on the eccentricity. These discoveries represent a major step toward assembling a complete, magnitude-limited sample of transiting hot Jupiters around FGK stars.