J/AJ/160/259ivo://CDS.VizieR/J/AJ/160/259doi:10.26093/cds/vizier.51600259CDSStefansson G.Kopparapu R.Lin A.Mahadevan S.Canas C.I.Kanodia S.,Ninan J.P.Cochran W.D.Endl M.Hebb L.Wisniewski J.Gupta A.,Everett M.Bender C.F.Diddams S.A.Ford E.B.Fredrick C.Halverson S.,Hearty F.Levi E.Maney M.Metcalf A.J.Monson A.Ramsey L.W.,Robertson P.Roy A.Schwab C.Terrien R.C.Wright J.T.2022-09-09T12:13:49Z2021-02-23T08:39:01ZCDS support team

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

cds-question@unistra.frexoplanetsdwarf-starsm-starsinfrared-astronomyspectroscopyphotometryvisible-astronomyradial-velocityWe report on the validation of two planets orbiting the nearby (36pc) M2 dwarf TOI-1266 observed by the TESS mission. This system is one of a few M dwarf multiplanet systems with close-in planets where the inner planet is substantially larger than the outer planet. The inner planet is sub-Neptune-sized (R=2.46{+/-}0.08R{Earth}) with an orbital period of 10.9days, while the outer planet has a radius of 1.67_-0.11_^+0.09^R{Earth} and resides in the exoplanet radius valley-the transition region between rocky and gaseous planets. With an orbital period of 18.8days, the outer planet receives an insolation flux of 2.4 times that of Earth, similar to the insolation of Venus. Using precision near-infrared radial velocities with the Habitable-zone Planet Finder Spectrograph, we place upper mass limits of 15.9 and 6.4M{Earth} at 95% confidence for the inner and outer planet, respectively. A more precise mass constraint of both planets, achievable with current radial velocity instruments given the host star brightness (V=12.9, J=9.7), will yield further insights into the dominant processes sculpting the exoplanet radius valley.2020AJ....160..259Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/160/259CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/328 : AllWISE Data Release (Cutri+ 2013)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)J/ApJS/200/15 : HARPS-TERRA project. I. (Anglada-Escude+, 2012)J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)J/AJ/145/102 : Spectro. of bright M dwarfs in the northern sky (Lepine+,2013)J/ApJ/784/45 : Kepler's multiple planet candidates. III. (Rowe+, 2014)J/A+A/577/A128 : CARMENES input catalogue of M dwarfs I (Alonso-Floriano+,2015)J/ApJ/807/45 : Potent. habitable planets orbiting M dwarfs (Dressing+, 2015)J/ApJ/834/17 : Mass & radius of planets, moons, low mass stars (Chen+, 2017)J/AJ/154/109 : California-Kepler Survey III. Planet radii (Fulton+, 2017)J/ApJ/836/77 : Library of high-S/N optical spectra of FGKM stars (Yee+, 2017)J/AJ/156/264 : California-Kepler Survey VII Planet radius gap (Fulton+, 2018)J/AJ/156/102 : TESS Input Catalog and Candidate Target List (Stassun+, 2018)J/AJ/155/48 : California-Kepler Survey V. Masses and radii (Weiss+, 2018)J/AJ/157/97 : Radial velocity measurements of K2-3 & GJ3470 (Kosiarek+,2019)J/ApJ/875/29 : Spectroscopic analysis of the CKS sample. I. (Martinez+, 2019)J/AJ/159/211 : Exoplanets parameters from Kepler and K2 (Cloutier+, 2020)J/AJ/160/22 : TOI-1235 RVs & optical spectroscopy (Cloutier+, 2020)J/ApJS/247/28 : K2 star parameters from Gaia & LAMOST (Hardegree-Ullman+,2020)J/AJ/159/120 : Transit time of K2-146b & K2-146c with K2 and HPF (Lam+, 2020)J/AJ/159/100 : Flux & RVs of the dwarf G9-40 with K2 & HPF (Stefansson+,2020)J/AJ/160/192 : Photometry and RVs of K2-25b with HPF (Stefansson+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/160/259https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/160/259http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/160/259https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/160/259https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/160/259http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/160/259GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/160/259/table4HPF radial velocities used in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2458854/2459004] Barycentric Julian Date (1)dtime.epochdoubleRVel[-14.9/17.6] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RVel[5.9/12.5] Uncertainty in RVelm/sstat.error;phys.velocfloatdLW[-29/69.5] Differential line width indicatorm**2.s**-2spect.line.width;arith.difffloate_dLW[13.8/29.3] Uncertainty in dLWm**2.s**-2stat.errorfloatCRX[-228/291] Chromatic activity indicator (2)meta.codefloate_CRX[45.3/213] Uncertainty in CRXstat.errorfloatirt1[0.54/0.57] Line 1 CaII Infrared Triplet line activity indicatorphys.emissivityfloate_irt1[0.002/0.004] Uncertainty in irt1stat.errorfloatirt2[0.29/0.31] Line 2 CaII Infrared Triplet line activity indicatorphys.emissivityfloate_irt2[0.002/0.004] Uncertainty in irt2stat.errorfloatirt3[0.31/0.34] Line 3 CaII Infrared Triplet line activity indicatorphys.emissivityfloate_irt3[0.002/0.004] Uncertainty in irt3stat.errorfloatJ/AJ/160/259/fig2Transit photometry of TOI-1266recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument used (TESS)instr.setupcharBJD[2458683/2458685] Barycentric Julian Datedtime.epochdoubleFlux[0.99/1.01] Normalized photometric flux with trendphot.flux;arith.ratiodoublee_Flux[0.003/0.004] Uncertainty in Fluxstat.error;phot.fluxdoubletrans[0.99/1.001]? Best-fit Transit model (1)stat.fit.residualdoublenullablegp[0.99/1.001]? Gaussian-Process red noise component of best-fit modelstat.fit.residualdoublenullableFluxDet[0.99/1.01]? Normalized photometric flux after removing trend with Gaussian Processphot.flux;arith.ratiodoublenullableTransMod[0.99/1]? Best-fit Transit model; not including Gaussian Processstat.fit.residualdoublenullableRes? Best-fit residualsstat.fit.residualdoublenullable