The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets
Article
Zhou, George. 2023. "The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets." Astrophysical Journal Supplement Series. 265. https://doi.org/10.3847/1538-4365/aca286
Article Title | The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets |
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ERA Journal ID | 1058 |
Article Category | Article |
Authors | Zhou, George |
Journal Title | Astrophysical Journal Supplement Series |
Journal Citation | 265 |
Article Number | 1 |
Number of Pages | 32 |
Year | 2023 |
Publisher | IOP Publishing |
Place of Publication | United States |
ISSN | 0067-0049 |
1538-4365 | |
Digital Object Identifier (DOI) | https://doi.org/10.3847/1538-4365/aca286 |
Web Address (URL) | https://iopscience.iop.org/article/10.3847/1538-4365/aca286/meta |
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∣ = 4fdg0 ± 3fdg5). 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. |
Keywords | Radial velocity; Exoplanets; Transit photometry; Exoplanet detection methods ; Hot Jupiters |
ANZSRC Field of Research 2020 | 510199. Astronomical sciences not elsewhere classified |
Byline Affiliations | Centre for Astrophysics |
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