J/A+A/691/A160ivo://CDS.VizieR/J/A+A/691/A160doi:10.26093/cds/vizier.36910160CDSSharma A.Stonkute E.Drazdauskas A.Minkeviciute R.Mikolaitis S.,Tautvaisiene G.Narbuntas T.2025-03-07T20:01:00Z2024-11-08T09:06:04ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsspectroscopychemical-abundancesAccurate atmospheric parameters and chemical composition of planet hosts play a major role in characterizing exoplanets and understanding their formation and evolution. Our objective is to uniformly determine atmospheric parameters and chemical abundances of carbon (C), nitrogen (N), oxygen(O) and alpha-elements-magnesium (Mg) and silicon (Si), together with C/O, N/O and Mg/Si abundance ratios for planet-hosting stars. Through this analysis, we aim to investigate the potential connections between stellar chemistry and the presence of planets. Our analysis is based on high-resolution spectra of 149 F, G and K dwarf and giant stars hosting planets or planetary systems. The spectra were obtained with the Vilnius University Echelle Spectrograph (VUES) on the 1.65 m Moletai Observatory telescope. The determination of stellar parameters is based on a standard analysis using equivalent widths and one-dimensional, plane-parallel model atmospheres calculated under the assumption of local thermodynamical equilibrium. The differential synthetic spectrum method was used to uniformly determine the carbon C(C2), nitrogen N(CN), oxygen [OI], magnesium MgI, and silicon SiI elemental abundances as well as the C/O, N/O and Mg/Si ratios. We analysed elemental abundances and ratios in dwarf and giant stars, finding that [C/Fe], [O/Fe], and [Mg/Fe] are lower in metal-rich dwarf hosts while [N/Fe] is close to the Solar ratio. Giants show smaller scatter in [C/Fe] and [O/Fe] and lower than the Solar average [C/Fe] and C/O ratios. The (C+N+O) abundances increase with [Fe/H] in giant stars, with a minimal scatter. We also noted an overabundance of Mg and Si in planet-hosting stars, particularly at lower metallicities, and a lower Mg/Si ratio in stars with planets. In giants hosting high-mass planets, nitrogen shows a moderate positive relationship with planet mass. C/O and N/O ratios show moderate negative and positive slopes in giant stars, respectively. Mg/Si ratio shows a negative correlation with planet mass across the entire stellar sample.2024A&A...691A.160Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A160CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/691/A160https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/691/A160http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/691/A160https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/691/A160https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/691/A160http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/691/A160GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/691/A160/tableb1 (Stellar physical and chemical properties (corrected version, 25-Feb-2025))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/691/A160/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/691/A160/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/691/A160/tableb1?GETtext/xml+votable180.050000true298.56200648.46145420.0055555555555555566/311 341 679 717 748 1201 1597 2152 2254 2312 2472 2497 2577 2579 2971 3118 3350 3663 3906 4082 4735 4881 5009 5067 5309 5522 5553 5556 5572 5718 5815 6006 6217 6219 6298 6760 6791 6831 7136 7162 7402 7760 7786 8319 8478 8671 8785 9061 9350 9403 9459 9753 9893 9934 10278 10490 10550 11087 11326 11394 11589 11598 11910 11931 12030 12352 12465 12482 12592 12612 12644 12646 12899 12983 13643 13808 14278 14329 14419 14434 14466 14516 14548 14568 14682 14896 14918 15973 16213 17731 18164 20020 20145 20338 22518 22878 23030 23201 24019 24312 26120 26440 26521 26575 27616 27750 27975 28044 28085 28103 28130 28274 28392 28400 29589 30170 30176 30541 30707 31428 31478 31606 31689 32509https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/691/A160?format=asciidefaultJ/A+A/691/A160/tableb1Stellar physical and chemical properties (corrected version, 25-Feb-2025)TeffEffective temperatureKphys.temperature.effectiveinte_TeffError in effective temperatureKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError in surface gravitylog(cm.s**-2)stat.errorfloat[Fe/H]Metallicityphys.abundfloate_[Fe/H]Error in metallicitystat.error;phys.abund.Fefloate_WError in heliocentric space velocity Wlog(km.s**-1)stat.error;pos.cartesian.zdoubledStellar distancekpcpos.distancedoubleRmeanMean Galactocentric distancekpcpos.distance;stat.meandoublee_RmeanError in mean Galactocentric distancekpcstat.errordoubleSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHostHost Tycho-2 catalogue identificationmeta.id;meta.maincharVtMicroturbulence velocitylog(km.s**-1)phys.veloc.microTurbfloate_VtError in microturbulence velocitylog(km.s**-1)stat.errorfloatRVRadial velocitylog(km.s**-1)phys.veloc;pos.heliocentricfloate_RVError in radial velocitylog(km.s**-1)stat.errorfloatAge? Stellar AgeGyrtime.agefloatnullablee_Age? Error in stellar ageGyrstat.error;time.agefloatnullableUHeliocentric space velocity Ulog(km.s**-1)pos.cartesian.xdoublee_UError in heliocentric space velocity Ulog(km.s**-1)stat.error;pos.cartesian.xdoubleVHeliocentric space velocity Vlog(km.s**-1)pos.cartesian.ydoublee_VError in heliocentric space velocity Vlog(km.s**-1)stat.error;pos.cartesian.ydoubleWHeliocentric space velocity Wlog(km.s**-1)pos.cartesian.zdoubleeOrbital Eccentricitysrc.orbital.eccentricitydoublee_eError in orbital eccentricitystat.errordoublezmaxMaximum height from Galactic planekpcpos.cartesian.z;pos.galacticdoublee_zmaxError in maximum height from Galactic planekpcstat.errordouble[C/H]? Carbon abundancephys.abundfloatnullablee_[C/H]? Error in carbon abundancestat.error;phys.abundfloatnullable[N/H]? Nitrogen abundancephys.abundfloatnullablee_[N/H]? Error in nitrogen abundancestat.error;phys.abundfloatnullable[O/H]? Oxygen abundancephys.abundfloatnullablee_[O/H]? Error in oxygen abundancestat.error;phys.abundfloatnullable[Mg/H]? Magnesium abundancephys.abundfloatnullablee_[Mg/H]? Error in magnesium abundancestat.error;phys.abundfloatnullable[Si/H]? Silicon abundancephys.abundfloatnullablee_[Si/H]? Error in silicon abundancestat.error;phys.abundfloatnullableC/O? Absolute Carbon-to-Oxygen abundance ratiophys.abundfloatnullableN/O? Absolute Nitrogen-to-Oxygen abundance ratiophys.abundfloatnullableMg/Si? Absolute Magnesium-to-Silicon abundance ratiophys.abundfloatnullableTD/DThick disk-to-thin disk probability ratiostat.fit.goodnessdoubleGroup[0/2] Chemical attribution to the Galactic subcomponent (1)meta.codeint_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/691/A160/tableb2Planetary parametersSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHostHost Tycho-2 catalogue identificationmeta.id.parentcharPlanetAssociate Planetmeta.id;meta.maincharMp? Planetary Mass (Earth Mass)(5.97236x10+24kg)phys.massdoublenullablePorb? Orbital Perioddtime.perioddoublenullablea? Semi Major Axisauphys.angSize.smajAxis;src.orbitaldoublenullableC/O? Absolute Carbon-to-Oxygen abundance ratiophys.abundfloatnullableN/O? Absolute Nitrogen-to-Oxygen abundance ratiophys.abundfloatnullableMg/Si? Absolute Magnesium-to-Silicon abundance ratiophys.abundfloatnullableRefPlanetary parameter references (1)meta.ref;stat.paramchar