The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets*
Authors: Yee Samuel W. , Winn Joshua N. , Hartman Joel D. , Bouma Luke G. , Zhou George , Quinn Samuel N. , Latham David W. , Bieryla Allyson , Rodriguez Joseph E. , Collins Karen A. , Alfaro Owen , Barkaoui Khalid , Beard Corey , Belinski Alexander A. , Benkhaldoun Zouhair , Benni Paul , Bernacki Krzysztof , Boyle Andrew W. , Butler R. Paul , Caldwell Douglas A. , Chontos Ashley , Christiansen Jessie L. , Ciardi David R. , Collins Kevin I. , Conti Dennis M. , Crane Jeffrey D. , Daylan Tansu , Dressing Courtney D. , Eastman Jason D. , Essack Zahra , Evans Phil , Everett Mark E. , Fajardo-Acosta Sergio , Forés-Toribio Raquel , Furlan Elise , Ghachoui Mourad , Gillon Michaël , Hellier Coel , Helm Ian , Howard Andrew W. , Howell Steve B. , Isaacson Howard , Jehin Emmanuel , Jenkins Jon M. , Jensen Eric L. N. , Kielkopf John F. , Laloum Didier , Leonhardes-Barboza Naunet , Lewin Pablo , Logsdon Sarah E. , Lubin Jack , Lund Michael B. , MacDougall Mason G. , Mann Andrew W. , Maslennikova Natalia A. , Massey Bob , McLeod Kim K. , Muñoz Jose A. , Newman Patrick , Orlov Valeri , Plavchan Peter , Popowicz Adam , Pozuelos Francisco J. , Pritchard Tyler A. , Radford Don J. , Reefe Michael , Ricker George R. , Rudat Alexander , Safonov Boris S. , Schwarz Richard P. , Schweiker Heidi , Scott Nicholas J. , Seager S. , Shectman Stephen A. , Stockdale Chris , Tan Thiam-Guan , Teske Johanna K. , Thomas Neil B. , Timmermans Mathilde , Vanderspek Roland , Vermilion David , Watanabe David , Weiss Lauren M. , West Richard G. , Zandt Judah Van , Zejmo Michal , Ziegler Carl 
Published: February 2023

Abstract
NASA’s Transiting Exoplanet Survey Satellite (TESS) mission promises to improve our understanding of hot Jupiters by providing an all-sky, magnitude-limited sample of transiting hot Jupiters suitable for population studies. Assembling such a sample requires confirming hundreds of planet candidates with additional follow-up observations. Here we present 20 hot Jupiters that were detected using TESS data and confirmed to be planets through photometric, spectroscopic, and imaging observations coordinated by the TESS Follow-up Observing Program. These 20 planets have orbital periods shorter than 7 days and orbit relatively bright FGK stars (10.9 < G < 13.0). Most of the planets are comparable in mass to Jupiter, although there are four planets with masses less than that of Saturn. TOI-3976b, the longest-period planet in our sample (P = 6.6 days), may be on a moderately eccentric orbit (e = 0.18 ± 0.06), while observations of the other targets are consistent with them being on circular orbits. We measured the projected stellar obliquity of TOI-1937A b, a hot Jupiter on a 22.4 hr orbit with the Rossiter–McLaughlin effect, finding the planet’s orbit to be well aligned with the stellar spin axis (∣λ∣ = 4.°0 ± 3.°5). We also investigated the possibility that TOI-1937 is a member of the NGC 2516 open cluster but ultimately found the evidence for cluster membership to be ambiguous. These objects are part of a larger effort to build a complete sample of hot Jupiters to be used for future demographic and detailed characterization work.