J/MNRAS/500/54ivo://CDS.VizieR/J/MNRAS/500/54doi:10.26093/cds/vizier/bg-fm-1pCDSNsamba B.Moedas N.Campante T.L.Cunha M.S.Garcia Hernandez A.,Suarez J.C.Monteiro M.J.P.F.G.Fernandes J.Jiang C.Akinsanmi B.2026-08-03T07:30:46Z2023-11-09T08:07:42ZCDS support team

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

cds-question@unistra.frasteroseismologyeffective-temperaturemetallicitystellar-radiistellar-massesstellar-ageschemically-peculiar-starsastronomical-modelsDetailed understanding of stellar physics is essential towards a robust determination of stellar properties (e.g. radius, mass, and age). Among the vital input physics used in the modelling of solar-type stars which remain poorly constrained, is the initial helium abundance. To this end, when constructing stellar model grids, the initial helium abundance is estimated either (i) by using the semi-empirical helium-to-heavy element enrichment ratio, ({Delta}Y/{Delta}Z), anchored to the standard big bang nucleosynthesis value, or (ii) by setting the initial helium abundance as a free variable. Adopting 35 low-mass, solar-type stars with multiyear Kepler photometry from the asteroseismic 'LEGACY' sample, we explore the systematic uncertainties on the inferred stellar parameters (i.e. radius, mass, and age) arising from the treatment of the initial helium abundance in stellar model grids. The stellar masses and radii derived from grids with free initial helium abundance are lower compared to those from grids based on a fixed {Delta}Y/{Delta}Z ratio. We find the systematic uncertainties on mean density, radius, mass, and age arising from grids which employ a fixed value of {Delta}Y/{Delta}Z and those with free initial helium abundance to be ~0.9 per cent, ~2 per cent, ~5 per cent, and ~29 per cent, respectively. We report that the systematic uncertainties on the inferred masses and radii arising from the treatment of initial helium abundance in stellar grids lie within the expected accuracy limits of ESA's PLATO, although this is not the case for the age.2021MNRAS.500...54Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/500/54CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/500/54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/500/54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/500/54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/500/54https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/500/54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/500/54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/500/54/table1 (Global asteroseismic and spectroscopic parameters of our stellar sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/500/54/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/500/54/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/500/54/table1?GETtext/xml+votable180.050000true286.438590838.52293360.005555555555555556Cone search capability for table J/MNRAS/500/54/grida (Stellar properties for our derived from grid A)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/500/54/grida?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/500/54/grida?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/500/54/grida?GETtext/xml+votable180.050000true285.02891544.02918250.0055555555555555566/14581 14751 14757 14759 14771 14776 14778-14779 14781 14918 14921 14930-14932 14935 14937 14939 14948 14959 14963 14969 15044 15062 15109 15112 15121 15123 15144-15145 15172 15174https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/500/54?format=asciidefaultJ/MNRAS/500/54/table1Global asteroseismic and spectroscopic parameters of our stellar samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameKIC identifiermeta.id;meta.maincharDnuAverage large frequency separation from Lund et al. (2017ApJ...835..172L, Cat. J/ApJ/835/172)uHzem.freq;src.varfloatE_DnuUpper error on DnuuHzstat.error;stat.maxfloate_DnuLower error on DnuuHzstat.errorfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveint[Fe/H]Fe/H abundance ratiophys.abund.Fe;arith.ratiofloate_[Fe/H]Error on [Fe/H]stat.error;phys.abund.FefloatRefReference for the spectroscopic parameters (1)meta.ref;pos.frameint_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/MNRAS/500/54/gridaStellar properties for our derived from grid ASimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameKIC identifier (except for HD176465A and HD176465B)meta.id;meta.maincharMassStar masssolMassphys.massdoublee_MassError on MasssolMassstat.error;phys.massdoubleRadStar radiussolRadphys.size.radiusdoublee_RadError on RadsolRadstat.errordoubleloggSurface gravitylog(cm.s**-2)phys.gravitydoublee_loggError on logglog(cm.s**-2)stat.errordoubleAgeStar ageMyrtime.agedoublee_AgeError on AgeMyrstat.error;time.agedoubleLumStar luminositysolLumphys.luminositydoublee_LumError on LumsolLumstat.errordoublerhoStar densityg.cm**-3phys.densitydoublee_rhoError on rhog.cm**-3stat.errordoubleXiFractional initial hydrogen abundancephys.abund.Xdoublee_XiError on Xistat.errordoubleYiFractional initial helium abundancephys.abund.Ydoublee_YiError on Yistat.errordoubleXsFractional surface hydrogen abundancephys.abund.Xdoublee_XsError on Xsstat.errordoubleYsFractional surface helium abundancephys.abund.Ydoublee_YsError on Ysstat.errordoubleamltMixing length parameterstat.paramdoublee_amltError on amltstat.errordouble_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/MNRAS/500/54/gridbStellar properties for our derived from grid BMassStar masssolMassphys.massdoubleAgeStar ageMyrtime.agedoublee_AgeError on AgeMyrstat.error;time.agedoubleLumStar luminositysolLumphys.luminositydoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameKIC identifier (except for HD176465A and HD176465B)meta.id;meta.mainchare_MassError on MasssolMassstat.error;phys.massdoubleRadStar radiussolRadphys.size.radiusdoublee_RadError on RadsolRadstat.errordoubleloggSurface gravitylog(cm.s**-2)phys.gravitydoublee_loggError on logglog(cm.s**-2)stat.errordoublee_LumError on LumsolLumstat.errordoublerhoStar densityg.cm**-3phys.densitydoublee_rhoError on rhog.cm**-3stat.errordoubleXiFractional initial hydrogen abundancephys.abund.Xdoublee_XiError on Xistat.errordoubleYiFractional initial helium abundancephys.abund.Ydoublee_YiError on Yistat.errordoubleXsFractional surface hydrogen abundancephys.abund.Xdoublee_XsError on Xsstat.errordoubleYsFractional surface helium abundancephys.abund.Ydoublee_YsError on Ysstat.errordoubleamltMixing length parameterstat.paramdoublee_amltError on amltstat.errordoubleJ/MNRAS/500/54/gridcStellar properties for our derived from grid CrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameKIC identifier (except for HD176465A and HD176465B)meta.id;meta.maincharMassStar masssolMassphys.massdoublee_MassError on MasssolMassstat.error;phys.massdoubleRadStar radiussolRadphys.size.radiusdoublee_RadError on RadsolRadstat.errordoubleloggSurface gravitylog(cm.s**-2)phys.gravitydoublee_loggError on logglog(cm.s**-2)stat.errordoubleAgeStar ageMyrtime.agedoublee_AgeError on AgeMyrstat.error;time.agedoubleLumStar luminositysolLumphys.luminositydoublee_LumError on LumsolLumstat.errordoublerhoStar densityg.cm**-3phys.densitydoublee_rhoError on rhog.cm**-3stat.errordoubleXiFractional initial hydrogen abundancephys.abund.Xdoublee_XiError on Xistat.errordoubleYiFractional initial helium abundancephys.abund.Ydoublee_YiError on Yistat.errordoubleXsFractional surface hydrogen abundancephys.abund.Xdoublee_XsError on Xsstat.errordoubleYsFractional surface helium abundancephys.abund.Ydoublee_YsError on Ysstat.errordoubleamltMixing length parameterstat.paramdoublee_amltError on amltstat.errordouble