J/A+A/636/A58ivo://CDS.VizieR/J/A+A/636/A58doi:10.26093/cds/vizier.36360058CDSAstudillo-Defru N.Cloutier R.Wang S.X.Teske J.Brahm R.Hellier C.,Ricker G.Vanderspek R.Latham D.Seager S.Winn J.N.Jenkins J.M.,Collins K.A.Stassun K.G.Ziegler C.Almenara J.M.Anderson D.R.,Artigau E.Bonfils X.Bouchy F.Briceno C.Butler R.P.Charbonneau D.,Conti D.M.Crane J.Crossfield I.J.M.Davies M.Delfosse X.Diaz R.F.,Doyon R.Dragomir D.Eastman J.D.Espinoza N.Essack Z.Feng F.,Figueira P.Forveille T.Gan T.Glidden A.Guerrero N.Hart R.,Henning Th.Horch E.P.Isopi G.Jenkins J.S.Jordan A.Kielkopf J.F.,Law N.Lovis C.Mallia F.Mann A.W.de Medeiros J.R.Melo C.,Mennickent R.E.Mignon L.Murgas F.Nusdeo D.A.Pepe F.Relles H.M.,Rose M.Santos N.C.Segransan D.Shectman S.Shporer A.Smith J.C.,Torres P.Udry S.Villasenor J.Winters J .G.Zhou G.2021-06-25T14:41:44Z2020-04-16T06:50:01ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsradial-velocityWe report the detection of a transiting super-Earth-sized planet (R=1.39+/-0.09R_{Earth}_) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V=11, K=7.1) located at 25.15+/-0.02pc. The host star was observed in the first sector of the Transiting Exoplanet Survey Satellite (TESS) mission. For confirmation and planet mass measurement purposes, this was followed up with ground-based photometry, seeing-limited and high-resolution imaging, and precise radial velocity (PRV) observations using the HARPS and Magellan/PFS spectrographs. By combining the TESS data and PRV observations, we find the mass of L 168-9 b to be 4.60+/-0.56M_{Earth}_ and thus the bulk density to be 1.74^+0.44^_-0.33_ times higher than that of the Earth. The orbital eccentricity is smaller than 0.21 (95% confidence). This planet is a level one candidate for the TESS mission's scientific objective of measuring the masses of 50 small planets, and it is one of the most observationally accessible terrestrial planets for future atmospheric characterization.2020A&A...636A..58Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/636/A58CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/636/A58https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/636/A58http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/636/A58https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/636/A58https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/636/A58http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/636/A58GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/636/A58/tableb2PFS time series for L 168-9recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2450000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricfloats_RVRadial velocity dispersionm/sphys.veloc.dispersionfloatHaHalpha indexspect.index;em.line.HalphafloatSS-indexspect.indexdoubleJ/A+A/636/A58/tableb1HARPS time series for L 168-9recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2450000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoubles_RVRadial velocity dispersionm/sphys.veloc.dispersionfloatHaHalpha indexspect.index;em.line.Halphadoubles_HaHalpha index dispersionspect.index;em.line.HalphadoubleHbHbeta indexspect.index;em.line.Hbetadoubles_HbHbeta index dispersionspect.index;em.line.HbetadoubleHgHgamma indexspect.index;em.line.Hgammadoubles_HgHgamma index dispersionspect.index;em.line.HgammadoubleNaDNaD-indexmeta.notedoubles_NaDNaD-index dispersioninstr.dispersiondoubleSS-indexspect.indexfloats_SS-index dispersioninstr.dispersionfloat