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dc.contributor.authorDawson, Rebekah I.
dc.contributor.authorHuang, Chelsea X.
dc.contributor.authorLissauer, Jack J.
dc.contributor.authorCollins, Karen A.
dc.contributor.authorSha, Lizhou
dc.contributor.authorArmstrong, James
dc.contributor.authorConti, Dennis M.
dc.contributor.authorCollins, Kevin I.
dc.contributor.authorEvans, Phil
dc.contributor.authorGan, Tianjun
dc.contributor.authorHorne, Keith
dc.contributor.authorIreland, Michael
dc.contributor.authorMurgas, Felipe
dc.contributor.authorMyers, Gordon
dc.contributor.authorRelles, Howard M.
dc.contributor.authorSefako, Ramotholo
dc.contributor.authorShporer, Avi
dc.contributor.authorStockdale, Chris
dc.contributor.authorZerjal, Marusa
dc.contributor.authorZhou, George
dc.contributor.authorRicker, G.
dc.contributor.authorVanderspek, R.
dc.contributor.authorLatham, David W.
dc.contributor.authorSeager, S.
dc.contributor.authorWinn, J.
dc.contributor.authorJenkins, Jon M.
dc.contributor.authorBouma, L. G.
dc.contributor.authorCaldwell, Douglas A.
dc.contributor.authorDaylan, Tansu
dc.contributor.authorDoty, John P.
dc.contributor.authorDynes, Scott
dc.contributor.authorEsquerdo, Gilbert A.
dc.contributor.authorRose, Mark
dc.contributor.authorSmith, Jeffrey C.
dc.contributor.authorYu, Liang
dc.identifier.citationDawson , R I , Huang , C X , Lissauer , J J , Collins , K A , Sha , L , Armstrong , J , Conti , D M , Collins , K I , Evans , P , Gan , T , Horne , K , Ireland , M , Murgas , F , Myers , G , Relles , H M , Sefako , R , Shporer , A , Stockdale , C , Zerjal , M , Zhou , G , Ricker , G , Vanderspek , R , Latham , D W , Seager , S , Winn , J , Jenkins , J M , Bouma , L G , Caldwell , D A , Daylan , T , Doty , J P , Dynes , S , Esquerdo , G A , Rose , M , Smith , J C & Yu , L 2019 , ' TOI-216b and TOI-216 c : two warm, large exoplanets in or slightly wide of the 2:1 orbital resonance ' , Astronomical Journal , vol. 158 , no. 2 , 65 .
dc.identifier.otherPURE: 260484875
dc.identifier.otherPURE UUID: 5051ddbd-415c-4715-948f-e980cee22986
dc.identifier.otherBibtex: urn:a98086b25e9bd64d6b7836955448af33
dc.identifier.otherWOS: 000475797700006
dc.identifier.otherScopus: 85072042250
dc.descriptionK.H. acknowledges support from STFC grant ST/R00824/1.en
dc.description.abstractWarm, large exoplanets with 10–100 day orbital periods pose a major challenge to our understanding of how planetary systems form and evolve. Although high eccentricity tidal migration has been invoked to explain their proximity to their host stars, a handful reside in or near orbital resonance with nearby planets, suggesting a gentler history of in situ formation or disk migration. Here we confirm and characterize a pair of warm, large exoplanets discovered by the TESS Mission orbiting K-dwarf TOI-216. Our analysis includes additional transits and transit exclusion windows observed via ground-based follow-up. We find two families of solutions, one corresponding to a sub-Saturn-mass planet accompanied by a Neptune-mass planet and the other to a Jupiter in resonance with a sub-Saturn-mass planet. We prefer the second solution based on the orbital period ratio, the planet radii, the lower free eccentricities, and libration of the 2:1 resonant argument, but cannot rule out the first. The free eccentricities and mutual inclination are compatible with stirring by other, undetected planets in the system, particularly for the second solution. We discuss prospects for better constraints on the planets' properties and orbits through follow-up, including transits observed from the ground.
dc.relation.ispartofAstronomical Journalen
dc.rightsCopyright © 2019. The American Astronomical Society. All rights reserved. This is the final published version of the work, which was originally published at:
dc.subjectPlanets and satellites: detectionen
dc.subjectPlanets and satellites: dynamical evolution and stabilityen
dc.subjectQB Astronomyen
dc.titleTOI-216b and TOI-216 c : two warm, large exoplanets in or slightly wide of the 2:1 orbital resonanceen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.St Andrews Centre for Exoplanet Scienceen
dc.description.statusPeer revieweden

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