J/MNRAS/508/4047ivo://CDS.VizieR/J/MNRAS/508/4047doi:10.26093/cds/vizier.75084047CDSRipepi V.Catanzaro G.Molinaro R.Gatto M.De Somma G.Marconi M.,Romaniello M.Leccia S.Musella I.Trentin E.Clementini G.Testa V.,Cusano F.Storm J.2024-08-21T20:18:49Z2022-06-27T08:41:05ZCDS support team

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

cds-question@unistra.frvariable-starsstellar-distancemetallicityvisible-astronomyClassical Cepheids (DCEPs) are the most important primary indicators of the extragalactic distance scale. Establishing the dependence on metallicity of their period-luminosity and period-Wesenheit (PLZ/PWZ) relations has deep consequences on the calibration of secondary distance indicators that lead to the final estimate of the Hubble constant (H0). We collected high-resolution spectroscopy for 47 DCEPs plus 1 BL Her variables with HARPS-N@TNG and derived accurate atmospheric parameters, radial velocities, and metal abundances. We measured spectral lines for 29 species and characterized their chemical abundances, finding very good agreement with previous results. We re-determined the ephemerides for the program stars and measured their intensity-averaged magnitudes in the V, I, J, H, Ks bands. We complemented our sample with literature data and used the Gaia Early Data Release 3 (EDR3) to investigate the PLZ/PWZ relations for Galactic DCEPs in a variety of filter combinations. We find that the solution without any metallicity term is ruled out at more than the 5{sigma} level. Our best estimate for the metallicity dependence of the intercept of the PLKs, PWJKs, PWVKs, and PWHVI relations with three parameters is -0.456+/-0.099, -0.465+/-0.071, -0.459+/-0.107, and -0.366+/-0.089mag/dex, respectively. These values are significantly larger than the recent literature. The present data are still inconclusive to establish whether or not also the slope of the relevant relationships depends on metallicity. Applying a correction to the standard zero-point offset of the Gaia parallaxes has the same effect of reducing by ~22 per cent the size of the metallicity dependence on the intercept of the PLZ/PWZ relations.2021MNRAS.508.4047Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/508/4047CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/508/4047https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/508/4047http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/508/4047https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/508/4047https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/508/4047http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/508/4047GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/508/4047/table1 (Properties of the program stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/508/4047/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/508/4047/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/508/4047/table1?GETtext/xml+votable180.050000true272.4445-18.37727780.0055555555555555566/3049 3059 3070 3182 3196 3329 3657 3665 12968 13032 14353 14607 14609 14660 20820 20863 21509 21511 21638 21704 22223 22432 23643 23727 23769 23808 23967 24339 28918 29102 29106 29160 29166 29249 29456 29511 29521 29526 30243 30313 30401 30688 30692 30870 406347.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/508/4047?format=asciiOpticaldefaultJ/MNRAS/508/4047/table1Properties of the program starsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the targetsmeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainTexpExposure time of the acquired spectrastime.duration;obs.exposurecharJ/MNRAS/508/4047/table2Atmospheric parameterse_RVRadial velocity errorkm/sstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharHJDHeliocentric Julian date at mid exposure (HJD-2400000)dtime.epochdoublePhiPulsation phasetime.phasefloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffEffective temperature errorKstat.error;phys.temperature.effectiveintloggGravitylog(cm.s**-2)phys.gravityfloate_loggGravity errorlog(cm.s**-2)stat.errorfloatVmicroMicroturbulent velocitykm/sphys.velocfloate_VmicroMicroturbulent velocity errorkm/sstat.errorfloatVbrBroadening parameter velocitykm/sphys.velocinte_VbrBroadening parameter velocity errorkm/sstat.errorintRVRadial velocitykm/sphys.veloc;pos.heliocentricfloatJ/MNRAS/508/4047/table3Abundances expressed in solar terms (Grevesse et al., 2010Ap&SS.328..178G) for the chemical elements detected in our targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.mainchar[C/H]? Carbon abundancephys.abundfloatnullablee_[C/H]? Uncertainty on the Carbon abundancestat.error;phys.abundfloatnullable[O/H]Oxygen abundancephys.abundfloate_[O/H]Uncertainty on the Oxygen abundancestat.error;phys.abundfloat[Na/H]Sodium abundancephys.abundfloate_[Na/H]Uncertainty on the Sodium abundancestat.error;phys.abundfloat[Mg/H]Magnesium abundancephys.abundfloate_[Mg/H]Uncertainty on the Magnesium abundancestat.error;phys.abundfloat[Al/H]Aluminium abundancephys.abundfloate_[Al/H]Uncertainty on the Aluminium abundancestat.error;phys.abundfloat[Si/H]Silicon abundancephys.abundfloate_[Si/H]Uncertainty on the Silicon abundancestat.error;phys.abundfloat[S/H]Sulfur abundancephys.abundfloate_[S/H]Uncertainty on the Sulfur abundancestat.error;phys.abundfloat[Ca/H]Calcium abundancephys.abundfloate_[Ca/H]Uncertainty on the Calcium abundancestat.error;phys.abundfloat[Sc/H]Scandium abundancephys.abundfloate_[Sc/H]Uncertainty on the Scandium abundancestat.error;phys.abundfloat[Ti/H]Titanium abundancephys.abundfloate_[Ti/H]Uncertainty on the Titanium abundancestat.error;phys.abundfloat[V/H]Vanadium abundancephys.abundfloate_[V/H]Uncertainty on the Vanadium abundancestat.error;phys.abundfloat[Cr/H]Chromium abundancephys.abundfloate_[Cr/H]Uncertainty on the Chromium abundancestat.error;phys.abundfloat[Mn/H]Manganese abundancephys.abundfloate_[Mn/H]Uncertainty on the Manganese abundancestat.error;phys.abundfloat[Fe/H]Iron abundancephys.abundfloate_[Fe/H]Uncertainty on the Iron abundancestat.error;phys.abund.Fefloat[Co/H]Cobalt abundancephys.abundfloate_[Co/H]Uncertainty on the Cobalt abundancestat.error;phys.abundfloat[Ni/H]Nichel abundancephys.abundfloate_[Ni/H]Uncertainty on the Nichel abundancestat.error;phys.abundfloat[Cu/H]Copper abundancephys.abundfloat[Zn/H]Zinc abundancephys.abundfloate_[Zn/H]Uncertainty on the Zinc abundancestat.error;phys.abundfloat[Sr/H]Strontium abundancephys.abundfloate_[Sr/H]Uncertainty on the Strontium abundancestat.error;phys.abundfloat[Y/H]Yttrium abundancephys.abundfloate_[Y/H]Uncertainty on the Yttrium abundancestat.error;phys.abundfloat[Zr/H]? Zirconium abundancephys.abundfloatnullablee_[Zr/H]? Uncertainty on the Zirconium abundancestat.error;phys.abundfloatnullable[Ba/H]Barium abundancephys.abundfloate_[Ba/H]Uncertainty on the Barium abundancestat.error;phys.abundfloat[La/H]Lanthanum abundancephys.abundfloate_[La/H]Uncertainty on the Lanthanum abundancestat.error;phys.abundfloat[Ce/H]Cerium abundancephys.abundfloate_[Ce/H]Uncertainty on the Cerium abundancestat.error;phys.abundfloat[Pr/H]? Praseodymium abundancephys.abundfloatnullablee_[Pr/H]? Uncertainty on the Praseodymium abundancestat.error;phys.abundfloatnullable[Nd/H]Neodymium abundancephys.abundfloate_[Nd/H]Uncertainty on the Neodymium abundancestat.error;phys.abundfloate_[Sm/H]Uncertainty on the Samarium abundancestat.error;phys.abundfloat[Eu/H]Europium abundancephys.abundfloate_[Eu/H]Uncertainty on the Europium abundancestat.error;phys.abundfloat[Gd/H]Gadolinium abundancephys.abundfloate_[Gd/H]Uncertainty on the Gadolinium abundancestat.error;phys.abundfloate_[Cu/H]Uncertainty on the Copper abundancestat.error;phys.abundfloat[Sm/H]Samarium abundancephys.abundfloatJ/MNRAS/508/4047/table4*Results of the photometric analysis of the targets.e_VmagUncertainty on the intensity-averaged magnitude in the V bandmagstat.error;phot.magfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharModeMode of pulsationmeta.code;src.varcharPerPeriod (the long one is reported in case of multiple pulsation)dtime.perioddoublee_PerUncertainty on the perioddstat.errorfloatEpochEpoch of maximum lightdtime.epochdoublee_EpochUncertainty on the epoch of maximum lightdstat.error;time.epochfloatAmpVPeak-to-peak amplitude in the V bandmagsrc.var.amplitudefloate_AmpVUncertainty on the peak-to-peak amplitude in the V bandmagstat.errorfloatBmag? Intensity-averaged magnitude in the B bandmagphot.mag;em.opt.Bfloatnullablee_Bmag? Uncertainty on the intensity-averaged magnitude in the B bandmagstat.error;phot.magfloatnullableVmagIntensity-averaged magnitude in the V bandmagphot.mag;em.opt.VfloatImag? Intensity-averaged magnitude in the I bandmagphot.mag;em.opt.Ifloatnullablee_Imag? Uncertainty on the intensity-averaged magnitude in the I bandmagstat.error;phot.magfloatnullableJmagIntensity-averaged magnitude in the J bandmagphot.mag;em.IR.Jfloate_JmagUncertainty on the intensity-averaged magnitude in the J bandmagstat.error;phot.magfloatHmagIntensity-averaged magnitude in the H bandmagphot.mag;em.IR.Hfloate_HmagUncertainty on the intensity-averaged magnitude in the H bandmagstat.error;phot.magfloatKsmagIntensity-averaged magnitude in the Ks bandmagphot.mag;em.IR.Kfloate_KsmagUncertainty on the intensity-averaged magnitude in the Ks bandmagstat.error;phot.magfloatE(B-V)Reddeningmagphot.color.excessfloate_E(B-V)Uncertainty on the Reddening estimatemagstat.errorfloatRefLiterature sources for the optical photometry (1)meta.ref;pos.framechar