J/A+A/684/A83ivo://CDS.VizieR/J/A+A/684/A83doi:10.26093/cds/vizier.36840083CDSMurgas F.Palle E.Orell-Miquel J.Carleo I.Pena-Monino L.,Perez-Torres M.Watkins C.N.Jeffers S.V.Azzaro M.Barkaoui K.,Belinski A.A.Caballero J.A.Charbonneau D.Cheryasov D.V.Ciardi D.R.,Collins K.A.Cortes-Contreras M.de Leon J.Duque-Arribas C.Enoc G.,Esparza-Borges E.Fukui A.Geraldia-Gonzalez S.Gilbert E.A.,Hatzes A.P.Hayashi Y.Henning T.Herrero E.Jenkins J.M.Lillo-Box J.,Lodieu N.Lund M.B.Luque R.Montes D.Nagel E.Narita N.,Parviainen H.Polanski A.S.Reffert S.Schlecker M.Schoefer P.,Schwarz R.P.Schweitzer A.Seager S.Stassun K.G.Tabernero H.M.,Terada Y.Twicken J.D.Vanaverbeke S.Winn J.N.Zambelli R.Amado P.J.,Quirrenbach A.Reiners A.Ribas I.2024-11-07T20:02:55Z2024-04-05T09:15:23ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsspectroscopyradial-velocityPlanets with orbital periods shorter than 1 day are rare and have formation histories that are not completely understood. Small (R_p < 2 R_earth) ultra-short-period (USP) planets are highly irradiated, probably have rocky compositions with high bulk densities, and are often found in multi-planet systems. Additionally, USP planets found around small stars are excellent candidates for characterization using present-day instrumentation. Of the current full sample of approximately 5500 confirmed exoplanets, only 130 are USP planets and around 40 have mass and radius measurements. Wolf 327 (TOI-5747) is an M dwarf (Rstar=0.406+/-0.015R_{sun}_, Mstar=0.405+/-0.019M_{sun}_, T_eff_=3542+/-70K, and V=13mag) located at a distance d=28.5pc. NASA's planet hunter satellite, TESS, detected transits in this star with a period of 0.573d (13.7h) and with a transit depth of 818ppm. Ground-based follow-up photometry, high resolution imaging, and radial velocity (RV) measurements taken with the CARMENES spectrograph confirm the presence of this new USP planet. Wolf 327b is a super-Earth with a radius of Rp=1.24+/-0.06R_{Earth}_ and a mass of Mp=2.53+/-0.46M_{Earth}_, yielding a bulk density of 7.24+/-1.66g/cm^3^ and thus suggesting a rocky composition. Owing to its close proximity to its host star (a=0.01au), Wolf 327b has an equilibrium temperature of 996+/-22K. This planet has a mass and radius similar to K2-229b, a planet with an inferred Mercury-like internal composition. Planet interior models suggest that Wolf 327b has a large iron core, a small rocky mantle, and a negligible (if any) H/He atmosphere.2024A&A...684A..83Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/684/A83CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/684/A83https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/684/A83http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/684/A83https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/684/A83https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/684/A83http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/684/A83GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/684/A83/tablea1CARMENES (VIS channel) radial velocity measurements computed with SERVAL, instrumental drift, and nightly zero point correctionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (TDB)dtime.epochdoubleRVRadial velocity (VIS channel)m/sphys.veloc;pos.heliocentricfloate_RVRadial velocity error (VIS channel)m/sstat.errorfloatDriftInstrumental drift (VIS channel)m/sphys.velocfloate_DriftInstrumental drift error (VIS channel)m/sstat.errorfloatzptInstrumental zero point correction (VIS channel)m/sphys.velocfloate_zptInstrumental zero point correction error (VIS channel)m/sstat.errorfloatJ/A+A/684/A83/tablea2SERVAL spectral line activity indicesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric julian date (TBD)dtime.epochdoubleCRXChromatic index (in m/s/Np)m/sspect.indexfloate_CRXChromatic index uncertainty (in m/s/Np)m/sstat.errorfloatdLWDifferential line widthm**2.s**-2spect.line.widthfloate_dLWDifferential line width uncertaintym**2.s**-2stat.errorfloatHalphaH{alpha} indexspect.indexfloate_HalphaH{alpha} index uncertaintystat.error;spect.linefloatNaD1Na D1 indexspect.indexfloate_NaD1Na D1 index uncertaintystat.errorfloatNaD2Na D2 indexspect.indexfloate_NaD2Na D2 index uncertaintystat.errorfloatCaIRT1Ca IRT 1 indexspect.indexfloate_CaIRT1Ca IRT 1 index uncertaintystat.errorfloatCaIRT2Ca IRT 2 indexspect.indexfloate_CaIRT2Ca IRT 2 index uncertaintystat.errorfloatCaIRT3Ca IRT 3 indexspect.indexfloate_CaIRT3Ca IRT 3 index uncertaintystat.errorfloat