The Aligned Orbit of the Eccentric Proto Hot Jupiter TOI-3362b

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dc.contributor.authorEspinoza Retamal, Juan
dc.contributor.authorBrahm, Rafael
dc.contributor.authorPetrovich, Cristobal
dc.contributor.authorJordán, Andrés
dc.contributor.authorStefánsson, Guðmundur
dc.contributor.authorSedaghati, Elyar
dc.contributor.authorHobson, Melissa J.
dc.contributor.authorMuñoz, Diego J.
dc.contributor.authorBoyle, Gavin
dc.contributor.authorLeiva, Rodrigo
dc.contributor.authorSuc, Vincent
dc.date.accessioned2023-09-29T16:52:48Z
dc.date.available2023-09-29T16:52:48Z
dc.date.issued2023
dc.description.abstractHigh-eccentricity tidal migration predicts the existence of highly eccentric proto-hot Jupiters on the "tidal circularization track," meaning that they might eventually become hot Jupiters, but that their migratory journey remains incomplete. Having experienced moderate amounts of the tidal reprocessing of their orbital elements, proto-hot Jupiters systems can be powerful test-beds for the underlying mechanisms of eccentricity growth. Notably, they may be used for discriminating between variants of high-eccentricity migration, each predicting a distinct evolution of misalignment between the star and the planet's orbit. We constrain the spin-orbit misalignment of the proto-hot Jupiter TOI-3362b with high-precision radial velocity observations using ESPRESSO at VLT. The observations reveal a sky-projected obliquity $\lambda = 1.2_{-2.7}^{+2.8}$ deg and constrain the orbital eccentricity to $e=0.720 \pm 0.016$, making it one of the most eccentric gas giants for which the obliquity has been measured. The large eccentricity and the striking orbit alignment of the planet suggest that ongoing coplanar high-eccentricity migration driven by a distant companion is a likely explanation for the system's architecture. This distant companion would need to reside beyond 5 au at 95% confidence to be compatible with the available radial velocity observations....
dc.fechaingreso.objetodigital2023-09-27
dc.format.extent9 páginas
dc.fuente.origenORCID
dc.identifier.doi10.48550/arXiv.2309.03306
dc.identifier.urihttps://doi.org/10.48550/arXiv.2309.03306
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/74758
dc.information.autorucInstituto de Astrofísica; Espinoza Retamal, Juan; S/I; 1025598
dc.information.autorucInstituto de Física; Petrovich, Cristobal; S/I; 131196
dc.language.isoen
dc.nota.accesoContenido completo
dc.rightsacceso abierto
dc.subjectExoplanets
dc.subjectHot Jupiters
dc.subjectExoplanet dynamics
dc.subjectPlanetary alignment
dc.subjectExoplanet migration
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.titleThe Aligned Orbit of the Eccentric Proto Hot Jupiter TOI-3362b
dc.typedocumento de trabajo
sipa.codpersvinculados1025598
sipa.codpersvinculados131196
sipa.trazabilidadORCID;2023-09-25
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