J/MNRAS/428/3252ivo://CDS.VizieR/J/MNRAS/428/3252doi:10.26093/cds/vizier.74283252CDSAndrievsky S.M.Lepine J.R.D.Korotin S.A.Luck R.E.Kovtyukh V.V.,Maciel W.J.2024-07-20T20:13:31Z2014-03-21T14:25:57ZCDS support team

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

cds-question@unistra.frvariable-starschemical-abundancesWe derived the barium atmospheric abundances for a large sample of Cepheids, comprising 270 stars. The sample covers a large range of Galactocentric distances, from about 4 to 15kpc, so it is appropriate to investigate the existence of radial barium abundance gradients in the Galactic disc. In fact, this is the first time that such a comprehensive analysis of the distribution of barium abundances in the Galactic disc has been carried out. As a result, we conclude that the Ba abundance distribution can be characterized by a zero gradient. This result is compared with derived gradients for other elements, and some reasons are briefly discussed for the independence of the barium abundances from Galactocentric distances.2013MNRAS.428.3252Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/428/3252CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/381/32 : Galactic Cepheid abundances (Andrievsky+, 2002)J/A+AS/143/211 : Galactic Cepheids BVRI photometry (Berdnikov+, 2000)J/A+A/404/423 : BVI photometry of Galactic Cepheids (Tammann+, 2003)J/A+A/534/A94 : Milky Way Cepheids radial velocities (Storm+, 2011)J/AJ/142/51 : Galactic Cepheids abundance variations (Luck+, 2011)J/AcA/61/285 : VI light curves of Galactic Bulge Cepheids (Soszynski+, 2011)J/ApJS/193/12 : JHK photometry of Northern Galactic Cepheids (Monson+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/428/3252https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/428/3252http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/428/3252https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/428/3252https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/428/3252http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/428/3252GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/428/3252/table3 (Programme stars, their phase parameters and barium abundance (for 238 stars))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/428/3252/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/428/3252/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/428/3252/table3?GETtext/xml+votable180.050000true91.645614426.32922140.0055555555555555565/9482 6/1239 1348 1426 1445 1765 1836 1920 3000 3005 3033 3045 3047 3052 3239 3263 3309 3342 3600 3641 3849 12321 12934 12971 13166 13201 13309-13310 13931 13933 13961 13990 14009 14047 14238-14239 14260 14262 14265 14271 14283 14295 14303 14328 14404 14409 14436 14469 14533 14601 14625 14637 14718 14770 15360 15425 15618 15660 21542 21648 21671 21683 21686 22020 22044 22064 22068-22069 22071 22074 22106 22115-22116 22122 22169 22214 22219 22221 22438 23619 23622 23635 23660 23662 23778 23841 23846 23852 23936 24002 24146 24226 24326 24372 24411 24450 24479 28717 28779 28808 28819 28893 28916 28991 29032 29089 29095 29104 29110 29126 29166 29216 29523 29875 30128 30219 30321-30322 30580 30609 30641 32012 32074 33804 37203 37223 37235 37268 37273 37330 37332 37334 37336 37340 37357 37364 37674 37713 37723 37729 37741 37745 37757 37828-37829 37856 37867 37870 37888 37903-37904 37917 37923 37926-37927 37938 37963 38020 38022-38023 38026 38029 38049 38627 39125 39217 39231-39232 39244 39348 39374 39410 39766 39771 39790 39796 39886 39920 39926 39933 39935 40608 41375 41383 41385 41461 41556 41599 41605 41608 41631 41667 41681 41697-41698 41721-41722 41737 41761-41762 41810 41813 41842 41862 42153 42156 42185 42297 42352 42378 42500 42820 43013 43022 43028 43041 43047 43056-43057 43060https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/428/3252?format=asciiOpticaldefaultJ/MNRAS/428/3252/table3Programme stars, their phase parameters and barium abundance (for 238 stars)RGGalacto-centric radiuskpcpos.distance;pos.galactocentricfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar namemeta.id;meta.maincharo_StarNumber of observations for this starmeta.numberintnullablePhase[0/1]? Phasetime.phasefloatnullableTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatVtTurbulent velocitykm/sphys.veloc.microTurbfloat[Fe/H]? Metallicitylog(Sun)phys.abund.ZfloatnullableA(Ba)NLTE Ba abundance (log{epsilon}=log(N/H)+12)phys.abundfloate_A(Ba)rms uncertainty on logepsBaNstat.errorfloato_A(Ba)Number of lines usedmeta.numberintSimbadSimbad column added by the CDSmeta.ref.urlchar_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