TESS Giants Transiting Giants. I.: A Noninflated Hot Jupiter Orbiting a Massive Subgiant

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dc.contributor.authorSaunders, Nicholas
dc.contributor.authorGrunblatt, Samuel K.
dc.contributor.authorHuber, Daniel
dc.contributor.authorCollins, Karen A.
dc.contributor.authorJensen, Eric L. N.
dc.contributor.authorVanderburg, Andrew
dc.contributor.authorBrahm, Rafael
dc.contributor.authorJordan, Andres
dc.contributor.authorEspinoza, Nestor
dc.contributor.authorHenning, Thomas
dc.contributor.authorHobson, Melissa J.
dc.contributor.authorQuinn, Samuel N.
dc.contributor.authorZhou, George
dc.contributor.authorButler, R. Paul
dc.contributor.authorCrause, Lisa
dc.contributor.authorKuhn, Rudi B.
dc.contributor.authorMogotsi, K. Moses
dc.contributor.authorHellier, Coel
dc.contributor.authorAngus, Ruth
dc.contributor.authorHattori, Soichiro
dc.contributor.authorChontos, Ashley
dc.contributor.authorRicker, George R.
dc.contributor.authorJenkins, Jon M.
dc.contributor.authorTenenbaum, Peter
dc.contributor.authorLatham, David W.
dc.contributor.authorSeager, Sara
dc.contributor.authorVanderspek, Roland K.
dc.contributor.authorWinn, Joshua N.
dc.contributor.authorStockdale, Chris
dc.contributor.authorCloutier, Ryan
dc.date.accessioned2025-01-20T22:00:53Z
dc.date.available2025-01-20T22:00:53Z
dc.date.issued2022
dc.description.abstractWhile the population of confirmed exoplanets continues to grow, the sample of confirmed transiting planets around evolved stars is still limited. We present the discovery and confirmation of a hot Jupiter orbiting TOI-2184 (TIC 176956893), a massive evolved subgiant (M-* = 1.53 +/- 0.12 M-circle dot, R-* = 2.90 +/- 0.14 R-circle dot) in the Transiting Exoplanet Survey Satellite (TESS) Southern Continuous Viewing Zone. The planet was flagged as a false positive by the TESS Quick-Look Pipeline due to periodic systematics introducing a spurious depth difference between even and odd transits. Using a new pipeline to remove background scattered light in TESS Full Frame Image data, we combine space-based TESS photometry, ground-based photometry, and ground-based radial velocity measurements to report a planet radius of R (p) = 1.017 +/- 0.051 R (J) and mass of M (p) = 0.65 +/- 0.16 M (J) . For a planet so close to its star, the mass and radius of TOI-2184b are unusually well matched to those of Jupiter. We find that the radius of TOI-2184b is smaller than theoretically predicted based on its mass and incident flux, providing a valuable new constraint on the timescale of post-main-sequence planet inflation. The discovery of TOI-2184b demonstrates the feasibility of detecting planets around faint (TESS magnitude > 12) post-main-sequence stars and suggests that many more similar systems are waiting to be detected in the TESS FFIs, whose confirmation may elucidate the final stages of planetary system evolution.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-3881/ac38a1
dc.identifier.eissn1538-3881
dc.identifier.issn0004-6256
dc.identifier.urihttps://doi.org/10.3847/1538-3881/ac38a1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93759
dc.identifier.wosidWOS:000740832800001
dc.issue.numero2
dc.language.isoen
dc.revistaAstronomical journal
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleTESS Giants Transiting Giants. I.: A Noninflated Hot Jupiter Orbiting a Massive Subgiant
dc.typeartículo
dc.volumen163
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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