J/A+A/691/A67ivo://CDS.VizieR/J/A+A/691/A67doi:10.26093/cds/vizier.36910067CDSMantovan G.Wilson T.G.Borsato L.Zingales T.Biazzo K.Nardiello D.,Malavolta L.Desidera S.Marzari F.Collier Cameron A.Nascimbeni V.,Majidi F.Z.Montalto M.Piotto G.Stassun K.G.Winn J.N.Jenkins J.M.,Mignon L.Bieryla A.Latham D.W.Barkaoui K.Collins K.A.Evans P.,Fausnaugh M.M.Granata V.Kostov V.Mann A.W.Pozuelos F.J.,Radford D.J.Relles H.M.Rowden P.Seager S.Tan T.-G.Timmermans M.,Watkins C.N.2025-02-26T20:01:56Z2024-11-01T17:14:00ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsradial-velocityvisible-astronomyRecent observations of giant planets have revealed unexpected bulk densities. Hot Jupiters, in particular, appear larger than expected for their masses compared to planetary evolution models, while warm Jupiters seem denser than expected. These differences are often attributed to the influence of the stellar incident flux, but could they also result from different planet formation processes? Is there a trend linking the planetary density to the chemical composition of the host star?In this work we present the confirmation of three giant planets in orbit around solar analogue stars. TOI-2714 b (P~=2.5d, R_mp_~=1.22R_mJ_, M_mp_=0.72M_mJ_) and TOI-2981 b (P~=3.6d, R_mp_~=1.2R_mJ_, M_mp_=2M_mJ_) are hot Jupiters on nearly circular orbits, while TOI-4914 b (P~=10.6d, R_mp_~=1.15R_mJ_, M_mp_=0.72M_mJ_) is a warm Jupiter with a significant eccentricity (e=0.41+/-0.02) that orbits a star more metal-poor ([Fe/H]~=-0.13) than most of the stars known to host giant planets. Similarly, TOI-2981 b orbits a metal-poor star ([Fe/H]~=-0.11), while TOI-2714 b orbits a metal-rich star ([Fe/H]~=0.30). Our radial velocity (RV) follow-up with the HARPS spectrograph allows us to detect their Keplerian signals at high significance (7, 30, and 23{sigma}, respectively) and to place a strong constraint on the eccentricity of TOI-4914 b (18{sigma}). TOI-4914 b, with its large radius (R_mp_~=1.15R_mJ_) and low insolation flux (F_star_<2x10^8^merg/s/cm^2^), appears to be more inflated than what is supported by current theoretical models for giant planets. Moreover, it does not conform to the previously noted trend that warm giant planets orbiting metal-poor stars have low eccentricities. This study thus provides insights into the diverse orbital characteristics and formation processes of giant exoplanets, in particular the role of stellar metallicity in the evolution of planetary systems.2024A&A...691A..67Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A67CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/691/A67https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/691/A67http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/691/A67https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/691/A67https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/691/A67http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/691/A67GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/691/A67/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/691/A67/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/691/A67/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/691/A67/stars?GETtext/xml+votable180.050000true61.4012-14.926766940.0055555555555555566/36223 38783 43886https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/691/A67?format=asciiOpticaldefaultJ/A+A/691/A67/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVCShow the Radial Velocity curvesmeta.ref.urlcharSNameSimbad namemeta.idcharJ/A+A/691/A67/tablea1TOI-2714: Radial velocity time-seriesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime, TDB (BJD-2400000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloatJ/A+A/691/A67/tablea2TOI-2981: Radial velocity time-seriesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloatTimeTime, TDB (BJD-2400000)dtime.epochdoubleJ/A+A/691/A67/tablea3TOI-4914: Radial velocity time-seriesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTimeTime, TDB (BJD-2400000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloat