J/AJ/167/153ivo://CDS.VizieR/J/AJ/167/153doi:10.26093/cds/vizier.51670153CDSRubenzahl R.A.Dai F.Howard A.W.Lissauer J.J.Van Zandt J.,Beard C.Giacalone S.Murphy J.M.A.Chontos A.Lubin J.,Brinkman C.L.Tyler D.MacDougall M.G.Rice M.Dalba P.A.Mayo A.W.,Weiss L.M.Polanski A.S.Blunt S.Yee S.W.Hill M.L.Angelo I.,Turtelboom E.V.Holcomb R.Behmard A.Pidhorodetska D.Batalha N.M.,Crossfield I.J.M.Dressing C.Fulton B.Huber D.Isaacson H.,Kane S.R.Petigura E.A.Robertson P.Scarsdale N.Mocnik T.,Fetherolf T.Malavolta L.Mortier A.Fiorenzano A.Pedani M.2024-11-06T20:19:33Z2024-06-26T06:29:15ZCDS support team

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

cds-question@unistra.frexoplanetsvisible-astronomyspectroscopyradial-velocityThe extreme environments of ultra-short-period planets (USPs) make excellent laboratories to study how exoplanets obtain, lose, retain, and/or regain gaseous atmospheres. We present the confirmation and characterization of the USP TOI-1347b, a 1.8{+/-}0.1R{Earth} planet on a 0.85day orbit that was detected with photometry from the TESS mission. We measured radial velocities of the TOI-1347 system using Keck/HIRES and HARPS-N and found the USP to be unusually massive at 11.1{+/-}1.2M{Earth}. The measured mass and radius of TOI-1347b imply an Earth-like bulk composition. A thin H/He envelope (>0.01% by mass) can be ruled out at high confidence. The system is between 1 and 1.8Gyr old; therefore, intensive photoevaporation should have concluded. We detected a tentative phase-curve variation (3{sigma}) and a secondary eclipse (2{sigma}) in TESS photometry, which, if confirmed, could indicate the presence of a high-mean-molecular-weight atmosphere. We recommend additional optical and infrared observations to confirm the presence of an atmosphere and investigate its composition.2024AJ....167..153Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/167/153CatalogResearchIsServedByTAP VizieR generic servicerelated-toIII/159 : Ca II H and K Measurements Made at MWO (Duncan+ 1991)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/ApJ/725/875 : Chromospheric activity for CPS stars (Isaacson+, 2010)J/AJ/142/19 : Speckle observations of KOI (Howell+, 2011)J/ApJ/790/146 : Planets Kepler's multi-transiting systems (Fabrycky+, 2014)J/ApJ/787/47 : 106 Kepler ultra-short-period planets (Sanchis-Ojeda+, 2014)J/AJ/154/109 : California-Kepler Survey. III. Planet radii (Fulton+, 2017)J/MNRAS/472/1618 : Kepler study of starspot lifetimes (Giles+, 2017)J/ApJ/844/102 : KIC parallaxes from asteroseismology vs Gaia (Huber+, 2017)J/ApJ/855/115 : Lithium abundances of KOIs from CKS spectra (Berger+, 2018)J/AJ/155/107 : HARPS-N obs of K2-141 planetary system (Malavolta+, 2018)J/AJ/159/280 : Gaia-Kepler stellar properties.I. KIC stars (Berger+, 2020)J/A+A/648/A103 : Thorium line list (Dumusque+, 2021)J/ApJS/254/39 : Exoplanet candidates from TESS 1st 2yr obs (Guerrero+, 2021)J/AJ/161/56 : The TESS-Keck Survey. II. RVs of TOI-561 (Weiss+, 2021)J/A+A/668/A158 : HD 20329 Radial velocity & activity indices (Murgas+, 2022)J/AJ/166/62 : New HIRES radial velocity data for V1298 Tau (Blunt+, 2023)J/AJ/166/33 : TESS-Keck Survey. XV. 108 TESS Planets (MacDougall+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/167/153https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/167/153http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/167/153https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/167/153https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/167/153http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/167/153GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/167/153/table3TOI-1347 radial velocities and S-IndicesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJD[2e+06/3e+06] Barycentric Julian Date of Observation (BJD-2457000)time.epochdoubleRVel[-30/36] Radial velocity (1)m/sspect.dopplerVelocfloate_RVel[1/5] Error on RVelm/sstat.error;spect.dopplerVelocfloatSHK[0/0.34]? SHK Indexspect.indexfloatnullablee_SHK[0.001]? Error on SHKstat.errorfloatnullableInstrInstrument used (HARPS-N or HIRES)instr.setupchar