The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets

March 2023 • 2023ApJS..265....1Y

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. • Van Zandt, Judah • Zejmo, Michal • Ziegler, Carl

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. *This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile


IPAC Authors


Jessie Christiansen

Associate Scientist


David Ciardi

Senior Scientist

Sergio Fajardo-Acosta

Associate Scientist