J/A+A/684/A85ivo://CDS.VizieR/J/A+A/684/A85doi:10.26093/cds/vizier.36840085CDSVernekar N.Lucatello S.Bragaglia A.Miglio A.Sanna N.Andreuzzi G.,Frasca A.2024-11-07T20:02:58Z2024-04-05T09:11:10ZCDS support team

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

cds-question@unistra.frgiant-starschemical-abundancesline-intensitiesspectroscopyvisible-astronomyinfrared-astronomyAsteroseismology, a powerful approach for obtaining internal structure and stellar properties, requires surface temperature and chemical composition information to determine mass and age. High-resolution spectroscopy is a valuable technique for precise stellar parameters (including surface temperature) and for an analysis of the chemical composition. We combine spectroscopic parameters with asteroseismology to test stellar models. Using high-resolution optical and near-IR spectra from GIARPS at the Telescopio Nazionale Galileo, we conducted a detailed spectroscopic analysis of 16 stars that were photometrically selected to be on the red giant and red clump branch. Stellar parameters and chemical abundances for light elements (Li, C, N, and F), Fe peak, {alpha} and n-capture elements were derived using a combination of equivalent widths and spectral synthesis techniques based on atomic and molecular features. Ages were determined through asteroseismic scaling relations and were compared with ages based on chemical clocks, Y/Mg and C/N.The spectroscopic parameters confirmed that the stars are part of the red giant branch and red clump. Two objects, HD 22045 and HD 24680, exhibit relatively high Li abundances, and HD 24680 might be a Li-rich giant resulting from mass transfer with an intermediate-mass companion that already underwent its asymptotic giant branch phase. The stellar parameters derived from scaling different sets of relations were consistent with each other. The values based on asteroseismology for the ages agree excellently with those derived from theoretical evolutionary tracks, but they disagree with ages derived from the chemical clocks Y/Mg and C/N.2024A&A...684A..85Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/684/A85CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/684/A85https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/684/A85http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/684/A85https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/684/A85https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/684/A85http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/684/A85GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/684/A85/stars (Stellar parameters and abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/684/A85/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/684/A85/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/684/A85/stars?GETtext/xml+votable180.050000true346.761301429963.052312545312010.0055555555555555566/366 403 4301 4341 4345 4512 8767 18142 18172 18318 18891 26942 26989 27082 27778https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/684/A85?format=asciiOpticalInfrareddefaultJ/A+A/684/A85/starsStellar parameters and abundancesSimbadNameSimbad column added by the CDSmeta.idcharnullableGaiaDR3Gaia DR3 IDmeta.idchare_[Ti1/Fe]Error in neutral titanium abundancestat.error;phys.abundfloat[Ti2/Fe]Ionised titanium abundancephys.abundfloate_[Ti2/Fe]Error in ionised titanium abundancestat.error;phys.abundfloat[Cr/Fe]Chromium abundancephys.abundfloate_[Cr/Fe]Error in chromium abundancestat.error;phys.abundfloat[Ni/Fe]Nickel abundancephys.abundfloate_[Ni/Fe]Error in nickel abundancestat.error;phys.abundfloatA(Li)Lithium abundancephys.abundcharNLTE-Li? NLTE correction in lithium abundancearith.factorfloatnullable[F/Fe]? Flourine abundancephys.abundfloatnullablee_[F/Fe]? Error in flourine abundancestat.error;phys.abundfloatnullable[Y/Fe]? Yttrium abundancephys.abundfloatnullablee_[Y/Fe]? Error in yttrium abundancestat.error;phys.abundfloatnullable[Na/Fe]? Sodium abundancephys.abundfloatnullablee_[Na/Fe]? Error in sodium abundancestat.error;phys.abundfloatnullable[Al/Fe]? Aluminium abundancephys.abundfloatnullablee_[Al/Fe]? Error in aluminium abundancestat.error;phys.abundfloatnullable[Sr/Fe]? Strontium abundancephys.abundfloatnullablee_[Sr/Fe]? Error in strontium abundancestat.error;phys.abundfloatnullable[Zr/Fe]? Zirconium abundancephys.abundfloatnullablee_[Zr/Fe]? Error in zirconium abundancestat.error;phys.abundfloatnullable[La/Fe]? Lanthanum abundancephys.abundfloatnullablee_[La/Fe]? Error in lanthanum abundancestat.error;phys.abundfloatnullable[Eu/Fe]? Europium abundancephys.abundfloatnullablee_[Eu/Fe]? Error in europium abundancestat.error;phys.abundfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar identifiermeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H]Metallicityphys.abund.ZfloatVmicMicroturbulent velocitykm/sphys.velocfloatRV? Radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV? Error in radial velocitykm/sstat.errorfloatnullable[C/Fe]optCarbon abundance in optical [C/Fe]phys.abundfloat[N/Fe]optNitrogen abundance in optical [N/Fe]phys.abundfloat[O/Fe]optOxygen abundance in optical [O/Fe]phys.abundfloat[C/Fe]IR? Carbon abundance in infrared [C/Fe]phys.abundfloatnullable[N/Fe]IR? Nitrogen abundance in infrared [N/Fe]phys.abundfloatnullable[O/Fe]IROxygen abundance in infrared [O/Fe]phys.abundcharl_C12/C13[~> ] Limit flag on C12/C13meta.code.errorcharC12/C13? Carbon isotopic ratio C12/C13phys.abundintnullable[Mg/Fe]Magnesium abundancephys.abundfloate_[Mg/Fe]Error in magnesium abundancestat.error;phys.abundfloat[Si/Fe]Silicon abundancephys.abundfloate_[Si/Fe]Error in silicon abundancestat.error;phys.abundfloat[Ca/Fe]Calcium abundancephys.abundfloate_[Ca/Fe]Error in Calcium abundancestat.error;phys.abundfloat[Ti1/Fe]Neutral titanium abundancephys.abundfloatJ/A+A/684/A85/tableEquivalent widths of lines used to derive abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar identifiermeta.id;meta.maincharIonAtomic number of the elementphys.atmol.ionStagedoublelambdaWavelength of the line in Angstromsem.wl;spect.linedoubleEPExcitation potential of the linephys.atmol.excitation;spect.linefloatloggfLog of oscillator strength of the linespect.line.intensityfloatEWEquivalent width of the linespect.line.eqWidthfloat