A 2:1 Mean-motion Resonance Super-Jovian Pair Revealed by TESS, FEROS, and HARPS

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dc.contributor.authorBozhilov, Vladimir
dc.contributor.authorAntonova, Desislava
dc.contributor.authorHobson, Melissa J.
dc.contributor.authorBrahm, Rafael
dc.contributor.authorJordan, Andres
dc.contributor.authorHenning, Thomas
dc.contributor.authorEberhardt, Jan
dc.contributor.authorRojas, Felipe I.
dc.contributor.authorBatygin, Konstantin
dc.contributor.authorTorres-Miranda, Pascal
dc.contributor.authorStassun, Keivan G.
dc.contributor.authorMillholland, Sarah C.
dc.contributor.authorStoeva, Denitza
dc.contributor.authorMinev, Milen
dc.contributor.authorEspinoza, Nestor
dc.contributor.authorRicker, George R.
dc.contributor.authorLatham, David W.
dc.contributor.authorDragomir, Diana
dc.contributor.authorKunimoto, Michelle
dc.contributor.authorJenkins, Jon M.
dc.contributor.authorTing, Eric B.
dc.contributor.authorSeager, Sara
dc.contributor.authorWinn, Joshua N.
dc.contributor.authorVillasenor, Jesus Noel
dc.contributor.authorBouma, Luke G.
dc.contributor.authorMedina, Jennifer
dc.contributor.authorTrifonov, Trifon
dc.date.accessioned2025-01-20T20:14:31Z
dc.date.available2025-01-20T20:14:31Z
dc.date.issued2023
dc.description.abstractWe report the discovery of a super-Jovian 2:1 mean-motion resonance (MMR) pair around the G-type star TIC 279401253, whose dynamical architecture is a prospective benchmark for planet formation and orbital evolution analysis. The system was discovered thanks to a single-transit event recorded by the Transiting Exoplanet Survey Satellite mission, which pointed to a Jupiter-sized companion with poorly constrained orbital parameters. We began ground-based precise radial velocity (RV) monitoring with HARPS and FEROS within the Warm gIaNts with tEss survey to constrain the transiting body's period, mass, and eccentricity. The RV measurements revealed not one but two massive planets with periods of 76.80(-0.06)(+0.06) and 155.3(-0.7)(+0.7) days, respectively. A combined analysis of transit and RV data yields an inner transiting planet with a mass of 6.14(-0.42)(+0.39) M-Jup and a radius of 1.00(-0.04)(+0.04) R-Jup, and an outer planet with a minimum mass of 8.02(-0.18)(+0.18) M-Jup, indicating a massive giant pair. A detailed dynamical analysis of the system reveals that the planets are locked in a strong firstorder, eccentricity-type 2:1 MMR, which makes TIC 279401253 one of the rare examples of truly resonant architectures supporting disk-induced planet migration. The bright host star, V approximate to 11.9 mag, the relatively short orbital period (P-b = 76.80(-0.06)(+0.06) days), and pronounced eccentricity (e = 0.448(-0.029)(+0.029)) make the transiting planet a valuable target for atmospheric investigation with the James Webb Space Telescope and ground-based extremely large telescopes.
dc.fuente.origenWOS
dc.identifier.doi10.3847/2041-8213/acbd4f
dc.identifier.eissn2041-8213
dc.identifier.issn2041-8205
dc.identifier.urihttps://doi.org/10.3847/2041-8213/acbd4f
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92201
dc.identifier.wosidWOS:000960668500001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal letters
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleA 2:1 Mean-motion Resonance Super-Jovian Pair Revealed by TESS, FEROS, and HARPS
dc.typeartículo
dc.volumen946
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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