J/A+A/659/A167ivo://CDS.VizieR/J/A+A/659/A167doi:10.26093/cds/vizier.36590167CDSRipepi V.Catanzaro G.Clementini G.De Somma G.Drimmel R.Leccia S.,Marconi M.Molinaro R.Musella I.Poggio E.2022-09-30T21:54:12Z2022-03-23T16:17:48ZCDS support team

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

cds-question@unistra.frvariable-starsmetallicitystellar-distancevisible-astronomytrigonometric-parallaxphotometrymilky-way-galaxyClassical Cepheids (DCEPs) represent a fundamental tool to calibrate the extragalactic distance scale. However, they are also powerful stellar population tracers, in the context of Galactic studies. The forthcoming Data Release 3 (DR3) of the Gaia mission will allow us to study with unprecedented detail the structure, the dynamics and the chemical properties of the Galactic disc, and in particular of the spiral arms, where most Galactic DCEPs reside. In this paper we aim at quantifying the metallicity dependence of the Galactic DCEPs Period-Wesenheit (PWZ) relation in the Gaia bands. We adopt a sample of 499 DCEPs with metal abundances from high-resolution spectroscopy, in conjunction with Gaia Early Data Release 3 parallaxes and photometry to calibrate a PWZ relation in the Gaia bands. We find a significant metallicity term, of the order of -0.5mag/dex, which is larger than the values measured in the NIR bands by different authors. Our best PWZ relation is W=(-5.988+/-0.018)-(3.176+/-0.044)(logP-1.0)-(0.520+/-0.090)[Fe/H]. We validate our PWZ relations by using the distance to the Large Magellanic Cloud as a benchmark, finding a very good agreement with the geometric distance provided by eclipsing binaries. As an additional test, we evaluate the metallicity gradient of the young Galactic disc, finding -0.0527+/-0.0022dex/kpc, in very good agreement with previous results.2022A&A...659A.167Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/659/A167CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)J/A+A/566/A37 : Iron abundances for 42 Galactic Cepheids (Genovali+, 2014)J/A+A/605/A79 : TGAS Cepheids and RR Lyrae stars (Gaia Collaboration+, 2017)J/A+A/619/A8 : Cepheid period-luminosity-metallicity relationhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/659/A167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/659/A167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/659/A167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/659/A167https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/659/A167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/659/A167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/659/A167/table1 (Data used in this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/659/A167/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/659/A167/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/659/A167/table1?GETtext/xml+votable180.050000true91.6456080626.329220.0055555555555555565/9482 6/1239 1331 1340 1348 1388 1402 1411 1421 1426 1429 1431-1432 1441 1445 1467 1625 1631 1765 1824 1829 1836 1858 1920 1935 1985 2805 3000 3005 3022 3033 3045 3047 3049-3050 3052 3054 3059-3060 3063 3070 3157 3182 3196 3239 3252 3255 3261 3263 3284-3285 3304 3306 3309 3322 3328-3329 3336-3337 3342 3361-3362 3365 3459 3589 3599-3601 3616 3627 3629 3631-3632 3641 3645 3656-3657 3663 3665 3682 3712-3714 3722 3728 3731 3849 12846 12934 12963 12968 12970-12971 13032 13166 13201 13288 13309-13310 13931 13933 13961 13990 14009 14047 14059 14075 14199 14205 14212 14238-14239 14246 14251 14260 14262 14265 14267 14271 14282-14283 14291-14292 14295 14301 14303 14314 14317 14320-14321 14323-14324 14328-14329 14353 14404 14407 14409 14411 14424 14427 14430 14436 14445 14449 14453 14455 14457 14533 14601-14602 14607 14609 14625 14629-14630 14634 14637 14640 14653 14660 14690 14698 14709 14718 14736 14770 15360 15378 15388 15392-15393 15396 15425 15429 15461 15585 15618 15632-15633 15639 15660 15698 20820 20827 20833 20863 21509 21511 21514 21542 21632 21638 21648 21671 21679 21683 21686 21704 22020 22044 22064 22068-22069 22071 22074 22106 22115-22116 22122 22124 22149 22169 22207 22210 22214 22219 22221 22223 22227 22255 22267 22432 22438 23619 23622 23635 23643 23660 23662 23669-23670 23727 23762 23769 23778 23808 23816 23841 23846 23852 23922 23936 23967 24002 24146 24153 24226 24326 24339-24340 24372 24411 24424 24450 24453 24478-24479 24527 24551 28717 28779 28808 28819 28831 28875 28893 28916 28918 28991 29032 29081 29089-29090 29095 29102 29104 29106 29110 29126 29160 29166 29216 29249 29456 29468 29511 29519 29521 29523 29526 29533 29665 29772 29875 29897 30128 30211 30219 30222-30223 30235 30243 30245 30256 30258 30265 30270 30307 30311 30313 30321-30322 30333 30401 30438 30504 30580 30609 30641 30646 30688 30692 32012 32064 32074 33804 37203 37223 37235 37245 37273 37303 37330 37332 37334 37336 37339-37340 37357 37364 37366 37674 37713 37721 37723 37729 37741 37745-37746 37757 37828-37829 37856 37867 37870 37888 37895 37903-37904 37915 37917 37923 37926-37927 37938 37963 38020 38022-38024 38026 38029 38049 38627 39125 39216-39217 39231-39232 39244-39245 39348 39374 39410 39766 39771 39790 39794 39796 39883 39886 39889 39891-39892 39908 39920 39926 39933 39935 40491 40494 40580 40608 40634 41375 41383 41385 41419 41461 41556 41599 41605 41608 41631 41667 41673-41674 41681 41697-41698 41721-41722 41737 41761-41762 41768 41810 41813 41833 41842 41860 41862 42153 42155-42156 42185 42297 42352 42378 42385 42445 42500 42820 43013 43022 43028 43041 43047 43056-43057 430601.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/659/A167?format=asciiOpticaldefaultJ/A+A/659/A167/table1Data used in this paperSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaEDR3Gaia EDR3 identification source_idmeta.id;meta.mainNameOther namemeta.idcharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainModeMode of pulsation (1)meta.code;src.varcharPerPeriod of pulsation (2)dtime.perioddoubleGmagMagnitude in the Gaia G bandmagphot.mag;em.optfloatGBP-GRPColour in the Gaia GBP-GRP bandsmagphot.color;em.opt.B;em.opt.RfloatplxOriginal parallax value from GaiaEDR3 cataloguemaspos.parallax.trigfloate_plxError on the original parallax value from GaiaEDR3 cataloguemasstat.error;pos.parallaxfloatplxcorrParallax value corrected according to Lindegren et al. (2021A&A...649A...4L)maspos.parallax.trigfloatRUWERe-normalised unit weight error from GaiaEDR3 cataloguestat.errorfloat[Fe/H]Adopted iron abundancephys.abund.Fefloate_[Fe/H]Error on the adopted iron abundancestat.error;phys.abund.Fefloatr_[Fe/H]Literature source for the iron abundance (3)meta.refchar