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TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system

hal.structure.identifierUniversité de Liège = University of Liège = Universiteit van Luik = Universität Lüttich [ULiège]
dc.contributor.authorTIMMERMANS, M.
hal.structure.identifierMidlands Ultracold Atom Research Centre
dc.contributor.authorDRANSFIELD, G.
hal.structure.identifierUniversité de Liège = University of Liège = Universiteit van Luik = Universität Lüttich [ULiège]
dc.contributor.authorGILLON, M.
hal.structure.identifierSchool of Physics and Astronomy [Birmingham]
dc.contributor.authorTRIAUD, A.
dc.contributor.authorRACKHAM, B.
dc.contributor.authorAGANZE, C.
hal.structure.identifierUniversité Cadi Ayyad [Marrakech] [UCA]
dc.contributor.authorBARKAOUI, K.
dc.contributor.authorBRICEÑO, C.
hal.structure.identifierCenter for Astrophysics and Space Sciences [La Jolla] [CASS]
dc.contributor.authorBURGASSER, A.
dc.contributor.authorCOLLINS, K.
dc.contributor.authorCOINTEPAS, M.
dc.contributor.authorDÉVORA-PAJARES, M.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorDUCROT, E.
dc.contributor.authorZÚÑIGA-FERNÁNDEZ, S.
hal.structure.identifierNASA Ames Research Center [ARC]
dc.contributor.authorHOWELL, S.
dc.contributor.authorKALTENEGGER, L.
hal.structure.identifierUniversity of Colorado [Boulder]
dc.contributor.authorMURRAY, C.
dc.contributor.authorPASS, E.
hal.structure.identifierHarvard-Smithsonian Center for Astrophysics [CfA]
dc.contributor.authorQUINN, S.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorRAYMOND, Sean N.
dc.contributor.authorSEBASTIAN, D.
dc.contributor.authorSTASSUN, K.
dc.contributor.authorZIEGLER, C.
dc.contributor.authorALMENARA, J.
dc.contributor.authorBENKHALDOUN, Z.
dc.contributor.authorBONFILS, X.
dc.contributor.authorCHRISTIANSEN, J.
dc.contributor.authorDAVOUDI, F.
dc.contributor.authorDE WIT, J.
dc.contributor.authorDELREZ, L.
dc.contributor.authorDEMORY, B.-O.
dc.contributor.authorFONG, W.
dc.contributor.authorFŰRÉSZ, G.
dc.contributor.authorGHACHOUI, M.
dc.contributor.authorGARCIA, L.
dc.contributor.authorGÓMEZ MAQUEO CHEW, Y.
dc.contributor.authorHOOTON, M.
dc.contributor.authorHORNE, K.
dc.contributor.authorGÜNTHER, M.
dc.contributor.authorJEHIN, E.
dc.contributor.authorJENKINS, J.
dc.contributor.authorLAW, N.
dc.contributor.authorMANN, A.
dc.contributor.authorMURGAS, F.
dc.contributor.authorPOZUELOS, F.
dc.contributor.authorPEDERSEN, P.
dc.contributor.authorQUELOZ, D.
dc.contributor.authorRICKER, G.
dc.contributor.authorROWDEN, P.
dc.contributor.authorSCHWARZ, R.
dc.contributor.authorSEAGER, S.
dc.contributor.authorSMART, R.
dc.contributor.authorSRDOC, G.
dc.contributor.authorSTRIEGEL, S.
dc.contributor.authorTHOMPSON, S.
dc.contributor.authorVANDERSPEK, R.
dc.contributor.authorWINN, J.
dc.date.issued2024-06-28
dc.identifier.issn0004-6361
dc.description.abstractEnContext. Small planets transiting bright nearby stars are essential to our understanding of the formation and evolution of exoplanetary systems. However, few constitute prime targets for atmospheric characterization, and even fewer are part of multiple star systems. Aims. This work aims to validate TOI-4336 A b, a sub-Neptune-sized exoplanet candidate identified by the TESS space-based transit survey around a nearby M dwarf. Methods. We validated the planetary nature of TOI-4336 A b through the global analysis of TESS and follow-up multi-band high-precision photometric data from ground-based telescopes, medium- and high-resolution spectroscopy of the host star, high-resolution speckle imaging, and archival images. Results. The newly discovered exoplanet TOI-4336 A b has a radius of 2.1 ± 0.1 R ⊕ . Its host star is an M3.5-dwarf star with a mass of 0.33 ± 0.01 M ⊙ and a radius of 0.33 ± 0.02 R ⊙ , and is a member of a hierarchical triple M-dwarf system 22 pc away from the Sun. The planet’s orbital period of 16.3 days places it at the inner edge of the habitable zone of its host star, which is the brightest of the inner binary pair. The parameters of the system make TOI-4336 A b an extremely promising target for the detailed atmospheric characterization of a temperate sub-Neptune by transit transmission spectroscopy with JWST.
dc.language.isoen
dc.publisherEDP Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.title.enTOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202347981
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.identifier.arxiv2404.12722
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA48
bordeaux.volume687
bordeaux.peerReviewedoui
hal.identifierhal-04727896
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04727896v1
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