J/AJ/168/101ivo://CDS.VizieR/J/AJ/168/101doi:10.26093/cds/vizier.51680101CDSDai F.Howard A.W.Halverson S.Orell-Miquel J.Palle E.Isaacson H.,Fulton B.Price E.M.Plotnykov M.Rogers L.A.Valencia D.Paragas K.,Greklek-McKeon M.Gomez Barrientos J.Knutson H.A.Petigura E.A.,Weiss L.M.Lee R.Brinkman C.L.Huber D.Stefansson G.Masuda K.,Giacalone S.Lu C.X.Kite E.S.Hu R.Gaidos E.Zhang M.,Rubenzahl R.A.Winn J.N.Han TeBeard C.Holcomb R.Householder A.,Gilbert G.J.Lubin J.Ong J.M.J.Polanski A.S.Saunders N.,Van Zandt J.Yee S.W.Zhang J.Zink J.Holden B.Baker A.,Brodheim M.Crossfield I.J.M.Deich W.Edelstein J.Gibson S.R.,Hill G.M.Jelinsky S.R.Kassis M.Laher R.R.Lanclos K.Lilley S.,Payne J.N.Rider K.Robertson P.Roy A.Schwab C.Shaum A.P.,Sirk M.M.Smith C.Vandenberg A.Walawender J.Wang S.X.,Wang S.-Y.(.Wishnow E.Wright J.T.Yeh S.Caballero J.A.,Morales J.C.Murgas F.Nagel E.Reiners A.Schweitzer A.,Tabernero H.M.Zechmeister M.Spencer A.Ciardi D.R.Clark C.A.,Lund M.B.Caldwell D.A.Collins K.A.Schwarz R.P.Barkaoui K.,Watkins C.Shporer A.Narita N.Fukui A.Srdoc G.Latham D.W.,Jenkins J.M.Ricker G.R.Seager S.Vanderspek R.2025-02-27T20:11:38Z2025-01-17T13:19:58ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frexoplanetsm-starsvisible-astronomyspectroscopyinfrared-astronomyradial-velocityTOI-6255 b (GJ 4256) is an Earth-sized planet (1.079+/-0.065R_{Earth}_) with an orbital period of only 5.7hr. With the newly commissioned Keck Planet Finder and CARMENES spectrographs, we determine the planet's mass to be 1.44+/-0.14M_{Earth}_. The planet is just outside the Roche limit, with P_orb_/P_Roche_=1.13+/-0.10. The strong tidal force likely deforms the planet into a triaxial ellipsoid with a long axis that is ~10% longer than the short axis. Assuming a reduced stellar tidal quality factor Q_*_^'^~10^7^, we predict that tidal orbital decay will cause TOI-6255 to reach the Roche limit in roughly 400Myr. Such tidal disruptions may produce the possible signatures of planet engulfment that have been seen on stars with anomalously high refractory elemental abundances compared to their conatal binary companions. TOI-6255 b is also a favorable target for searching for star-planet magnetic interactions, which might cause interior melting and hasten orbital decay. TOI-6255 b is a top target (with an Emission Spectroscopy Metric of about 24) for phase-curve observations with the James Webb Space Telescope.2024AJ....168..101Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/168/101CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/145/102 : Sp. of bright M dwarfs in the northern sky (Lepine+, 2013)J/A+A/555/A58 : New Kepler planetary candidates (Ofir+, 2013)J/A+A/562/A71 : Abundances of solar neighbourhood dwarfs (Bensby+, 2014)J/MNRAS/443/2561 : CONCH-SHELL catalog of nearby M dwarfs (Gaidos+, 2014)J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)J/A+A/561/A138 : Transiting planets search (Ofir+, 2014)J/ApJ/787/47 : 106 Kepler ultra-short-period planets (Sanchis-Ojeda+, 2014)J/ApJ/808/13 : XO-2S and XO-2N chemical composition (Ramirez+, 2015)J/A+A/597/A47 : CARMENES input cat. of M dwarfs II (Cortes-Contreras+ 2017)J/ApJ/844/102 : KIC star plxs from asteroseismology vs Gaia (Huber+, 2017)J/ApJ/836/77 : High-S/N optical spectra of FGKM stars (Yee+, 2017)J/A+A/612/A95 : K2-141 b radial velocity and light curve (Barragan+, 2018)J/ApJ/856/23 : BANYAN. XI. The BANYAN {Sigma} algorithm (Gagne+, 2018)J/A+A/615/A39 : Exoplanets interior structures (Kellermann+, 2018)J/AJ/155/165 : Dissipation in exoplanet hosts (Penev+, 2018)J/ApJ/871/63 : How to constrain your M dwarf. II. Nearby bin. (Mann+, 2019)J/A+A/625/A68 : Radii and masses of the CARMENES targets (Schweitzer+, 2019)J/A+A/642/A115 : CARMENES input catalogue of M dwarfs. V. (Cifuentes+, 2020)J/A+A/642/A115 : CARMENES input catalogue of M dwarfs. V. (Cifuentes+, 2020)J/A+A/636/A74 : HARPS radial velocity database (Trifonov+, 2020)J/A+A/656/A162 : CARMENES stellar atmospheric parameters (Marfil+, 2021)J/other/NatAs/5.1163S : Sun-like stars abundances (Spina+, 2021)J/other/NatAs/5.1163 : Sun-like stars abundances (Spina+, 2021)J/AJ/164/215 : Candidate members of Cep-Her, RSG-5 and CH-2 (Bouma+, 2022)J/A+A/657/A66 : List of FeI and FeII used for SteParSyn (Tabernero+, 2022)J/A+A/680/A73 : CARMENES M dwarf template library (Nagel+ 2023)J/other/Nat/627.501 : Co-moving pair of stars abundances (Liu+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/168/101https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/168/101http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/168/101https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/168/101https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/168/101http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/168/101GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/168/101/hrspecCombined table from original tablese_RV[0.7/4.3] RV uncertaintym/sstat.error;spect.dopplerVelocfloatInstInstrumentmeta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2460087/2460272.9] Barycentric Julian Datedtime.epochdoubleRV[-21.5/21.5] Radial velocitym/sspect.dopplerVelocfloat