A Cold and Superpuffy Planet on a Prograde Orbit

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dc.article.numberL13
dc.catalogadorgjm
dc.contributor.authorEspinoza Retamal, Juan Ignacio
dc.contributor.authorBrahm, Rafael
dc.contributor.authorPetrovich, Cristobal
dc.contributor.authorJordán, Andrés
dc.contributor.authorHenning, Thomas
dc.contributor.authorTrifonov, Trifon
dc.contributor.authorWinn, Joshua N.
dc.contributor.authorRea, Erika
dc.contributor.authorGünther, Maximilian N.
dc.contributor.authorAgabi, Abdelkrim
dc.contributor.authorBendjoya, Philippe
dc.contributor.authorBhaskar, Hareesh
dc.contributor.authorBouchy, François
dc.contributor.authorCatelan, Márcio
dc.contributor.authorCharalambous, Carolina
dc.contributor.authorDeloupy, Vincent
dc.contributor.authorDransfield, George
dc.contributor.authorEberhardt, Jan
dc.contributor.authorEspinoza, Néstor
dc.contributor.authorFreckelton, Alix V.
dc.contributor.authorGuillot, Tristan
dc.contributor.authorHobson, Melissa J.
dc.contributor.authorJones, Matías I.
dc.contributor.authorLendl, Monika
dc.contributor.authorMekarnia, Djamel
dc.contributor.authorMuñoz, Diego J.
dc.contributor.authorNielsen, Louise D.
dc.contributor.authorRojas Henríquez, Felipe Ignacio
dc.contributor.authorSchmider, François-Xavier
dc.contributor.authorSedaghati, Elyar
dc.contributor.authorStefánsson, Guđmundur
dc.contributor.authorStriegel, Stephanie
dc.contributor.authorSuarez, Olga
dc.contributor.authorTala Pinto, Marcelo
dc.contributor.authorTimmermans, Mathilde
dc.contributor.authorTriaud, Amaury H. M. J.
dc.contributor.authorUdry, Stéphane
dc.contributor.authorUlmer-Moll, Solène
dc.contributor.authorZiegler, Carl
dc.date.accessioned2026-01-09T13:04:15Z
dc.date.available2026-01-09T13:04:15Z
dc.date.issued2026
dc.description.abstractWe report the discovery of TOI-4507 b, a transiting sub-Saturn with a density <0.2 g cm−3 on a 105 days prograde orbit around a 700 Myr old F star. The transits were detected using data from TESS as well as the Antarctic telescope ASTEP. A joint analysis of the light curves and radial velocities from HARPS, FEROS, and CORALIE confirmed the planetary nature of the signal, by limiting the mass to be below 20 M⊕ at 95% confidence. The radial velocities also exhibit the Rossiter–McLaughlin effect and imply that the planet orbits the star in a prograde orbit with a sky-projected obliquity 15 44 50 = + ° (|λ| < 80° at 3σ). With these characteristics, TOI-4507 is one of the longest-period systems for which the stellar obliquity has been measured, and the planet is among the longest-period and youngest “superpuff” planets yet discovered.
dc.fechaingreso.objetodigital2026-01-09
dc.format.extent14 páginas
dc.fuente.origenORCID
dc.identifier.doi10.3847/2041-8213/ae2bfa
dc.identifier.urihttps://doi.org/10.3847/2041-8213/ae2bfa
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/107614
dc.information.autorucInstituto de Astrofísica; Espinoza Retamal, Juan Ignacio; 0000-0001-9480-8526; 1025598
dc.information.autorucInstituto de Astrofísica; Catelan, Márcio; 0000-0001-6003-8877; 1001556
dc.information.autorucInstituto de Astrofísica; Charalambous, Carolina; S/I; 1303924
dc.information.autorucInstituto de Astrofísica; Rojas Henríquez, Felipe Ignacio; S/I; 185240
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaThe Astrophysical Journal Letters
dc.rightsacceso abierto
dc.rights.licenseCC BY 4.0 Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc520
dc.titleA Cold and Superpuffy Planet on a Prograde Orbit
dc.typeartículo
dc.volumen996
sipa.codpersvinculados1025598
sipa.codpersvinculados1001556
sipa.codpersvinculados1303924
sipa.codpersvinculados185240
sipa.trazabilidadORCID;2026-01-05
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