J/A+A/689/A223ivo://CDS.VizieR/J/A+A/689/A223doi:10.26093/cds/vizier.36890223CDSTabernero H.MShan Y.Caballero J. A.Duque-Arribas C.Montes D.,Gonzalez Hernandez J.I.Zapatero Osorio M.R.Schweitzer A.Henning T.,Cortes-Contreras M.Quirrenbach A.Amado P.JReiners A.Ribas I.,Bergond G.Morales J. C.2024-11-29T20:05:42Z2024-09-13T12:25:46ZCDS support team

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

cds-question@unistra.frm-starseffective-temperaturechemical-abundancesvisible-astronomyWe present the abundances of magnesium (Mg) and silicon (Si) for 314 dwarf stars with spectral types in the interval K7.0-M5.5 (Teff range 4200-3050K) observed with the CARMENES high-resolution spectrograph at the 3.5m telescope at the Calar Alto Observatory. Our analysis employs the BT-Settl model atmospheres, the radiative transfer code Turbospectrum, and a state-of-the-art selection of atomic and molecular data. These Mg and Si abundances are critical for understanding both the chemical evolution and assembly of the Milky Way and the formation and composition of rocky planets. Our chemical abundances show a line-to-line scatter at the level of 0.1 dex for all studied spectral types. The typical error bar of our chemical abundance measurements is +/-0.11dex (Mg) and +/-0.16dex (Si) for all spectral types based on the comparison of the results obtained for stellar components of multiple systems. The derived abundances are consistent with the galactic evolution trends and observed chemical abundance distribution of earlier FGK-type stars in the solar neighbourhood. Besides, our analysis provides compatible abundances for stars in multiple systems. In addition, we studied the abundances of different galactic stellar populations. In this paper, we also explore the relation of the Mg and Si abundances of stars with and without known planets2024A&A...689A.223Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/689/A223CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/577/A128 : CARMENES input catalogue of M dwarfs. IJ/A+A/656/A162 : CARMENES stellar atmospheric parameters (Marfil+, 2021)J/A+A/670/A139 : CARMENES search for exoplanets around M dwarfs (Ribas+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/689/A223https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/689/A223http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/689/A223https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/689/A223https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/689/A223http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/689/A223GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/689/A223/tablea1 (Magnesium and silicon abundances and main parameters of investigated stars (sorted by SpT))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/689/A223/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/689/A223/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/689/A223/tablea1?GETtext/xml+votable180.050000true64.1900019-12.08401530.0055555555555555560/https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/689/A223?format=asciiOpticaldefaultJ/A+A/689/A223/tablea1Magnesium and silicon abundances and main parameters of investigated stars (sorted by SpT)SimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKarmnKarmn namemeta.id;meta.maincharNameOther namemeta.idcharSpTypeSpectral type (1)src.spTypecharS/NSignal-to-noise ratio of the template spectrumstat.snrintvsiniProjected rotational velocity (2)km/sphys.veloc.rotatfloate_vsiniError on vsini (2)km/sstat.error;phys.veloc.rotatfloatTeffEffective Temperature (3)Kphys.temperature.effectiveinte_TeffError on effective temperature (3)Kstat.error;phys.temperature.effectiveintloggSurface gravity (3)log(cm.s**-2)phys.gravityfloate_loggError on surface gravity (3)log(cm.s**-2)stat.errorfloat[Fe/H]Metallicity ([Fe/H]) (3)phys.abund.Zfloate_[Fe/H]Error on metallicity ([Fe/H]) (3)stat.error;phys.abund.Fefloat[Mg/H]Mg abundancephys.abundfloate_[Mg/H]? Line scatter for Mgstat.error;phys.abundfloatnullable[Si/H]? Si abundancephys.abundfloatnullablee_[Si/H]? Line scatter for Sistat.error;phys.abundfloatnullablePopGalactic population kinematic membership (4)meta.codecharNplNumber of known planets around the star (5)meta.numberint_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.main