J/A+A/649/A126ivo://CDS.VizieR/J/A+A/649/A126doi:10.26093/cds/vizier.36490126CDSTautvaisiene G.Viscasillas Vazquez C. Mikolaitis S.Stonkute E.,Minkeviciute R.Drazdauskas A.Bagdonas V.2022-05-17T08:35:35Z2021-05-26T16:45:34ZCDS support team

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

cds-question@unistra.frchemical-abundancesstellar-agesThe aim of this work is to determine abundances of neutron-capture elements for thin- and thick-disc F, G, and K stars in several selected sky fields near the North Ecliptic Pole and to compare the results with the Galactic chemical evolution models, to explore elemental gradients according to stellar ages, mean galactocentric distances, and maximum heights above the Galactic plane. The observational data were obtained with the 1.65 meter telescope at the Moletai Astronomical Observatory and a fibre-fed high-resolution spectrograph covering a full visible wavelength range (4000-8500{AA}). Elemental abundances were determined using a differential line-by-line spectrum synthesis using the TURBOSPECTRUM code with the MARCS stellar model atmospheres and accounting for the hyperfine-structure effects. Results. We determined abundances of Sr, Y, Zr, Ba, La, Ce, Pr, Nd, Sm, and Eu for 424 thin- and 82 thick-disc stars. The sample of thick-disc stars shows a clearly visible decrease of [Eu/Mg] with increasing metallicity compared to the thin-disc stars, bringing more evidences of different chemical evolution in these two Galactic components. Abundance correlation with age slopes for the investigated thin-disc stars are slightly negative for the majority of s-process dominated elements, while r-process dominated elements have positive correlations. Our sample of thin-disc stars with ages spanning from 0.1 to 9Gyrs gives the [Y/Mg]=0.022(+/-0.015)-0.027(+/-0.003)/age[Gyr] relation. However, for the thick-disc stars, when taking into account also data from other studies, we found that [Y/Mg] cannot serve as an age indicator. The radial abundance-to-iron gradients in the thin disc are negligible for the s-process dominated elements and become positive for the r-process dominated elements, the vertical gradients are negative for the light s-process dominated elements and become positive for the r-process dominated elements. In the thick disc, the radial abundance-to-iron slopes are negligible and the vertical ones are predominantly negative.2021A&A...649A.126Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/649/A126CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/649/A126https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/649/A126http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/649/A126https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/649/A126https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/649/A126http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/649/A126GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/649/A126/table2 (Abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/649/A126/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/649/A126/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/649/A126/table2?GETtext/xml+votable180.050000true250.3227666731.601936670.0055555555555555565/2908 2910 2934 3839 6/3452 3551 3572 3575 3805 3831 3870 3905 3911 3913 3919-3920 3927 3929 3932 3944-3945 3979 3988 4028 4062 4072 4075 7511 7595 7645 7661 7665 7674 7803-7804 7807 7839 7868 7871 7885 7887 7895 7902 7907 7913-7914 7918 7925-7926 7928 7956 7958 7962 7996 8017 8019-8020 8058 8060 8069 8073 8084 8094 8109 8111-8112 8126 8141 8143 8156 8184 9294-9295 9321 9323 9327 9375 9408 9419 9430 9443 9460 9471 9476 9480 9483 9492 9532 9536 9540 9553 9591 9629 9637 9648 9660 9662 9664 9679-9680 9688 9705 9712 9801 9805 9807 9843 9854 10004 10019 10034 10043 10052 10061 10063 10069 10079 10090 10097 10099-10101 10103 10105-10106 10110 10115 10177 10179-10180 10187-10188 10192 10199-10201 10209 10215 10217-10221 10223-10225 10227 10229 10235-10236 11540 11542-11543 11547 11551 11571 11573 11575 11581 11585 11587 11589-11590 11594-11595 11598 11601 11605 11610 11612 11618 11620 11627 11630 11636-11638 11644 11647 11665 11668 11670-11671 11676 11679 11709-11710 11712-11714 11717 11719 11722 11725-11726 11729 11732 11734-11735 11744 11746-11747 11756 11760 11764-11765 11767-11768 11772-11773 11955-11956 12006 12030 12044 12047 12058 12095-12096 12113 12117 12122 12144 12146 12158 12160 12182 12204 12228 12231-12232 12238 12259 12268 12270-12271 12274 14502 14522 14525 14568 14573 14860-14861 14881 14901 14904 14906 14917 14947-14948 14951 14959 14962 14964 14976 14981 14994 14998 15007 15014 15023 15030 15032 15044 15071 15079 15091 15144 15226-15227 15231 15263 15271 15277 15279 15286-15287 15289-15290 15300 15302-15303 15305 15308 15311 15316 15318 15320 15322-15324 15327 15329 15332 15337 15340 15343 15349 15354-15355 15837 15839 15855 15865 15907 15913 15915-15916 15919 15923-15924 15927-15929 15931 15970-15971 15974 15981 15986 15995 15998-15999 16001-16003 16005 16007-16010 16013-16014 16018 16022-16024 16031 16034-16035 16037 16040 16043 16045 16048 16050-16051 16056 16060 16063 16065 16068-16070 16077-16078 16080 16082-16083 16085 16088-16089 16094 16096-16098 16100 16102-16103 16111 16113 16115 16123-16124 16127 16183 16185 16220 16244 16251-16252 16264 16289 16291 16294 16296 16299 16302 16324 16338 16342 16351 16353 16357 16359 32230 32372 32459 32461 32473 32479 32537 32549 32552 32561 32575 32582 32585 32612 32617-32620 32630 32645-32646 32684 32686 32711 32748 32751 32757 32765https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/649/A126?format=asciidefaultJ/A+A/649/A126/table2AbundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarTarget name in Tycho-2 catalogue, TYCNNNN-NNNN-Nmeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainTeffEffective temperatureKphys.temperature.effectiveintlogglog of surface gravitylog(cm.s**-2)phys.gravityfloat[FeI/H]Abundance [FeI/H]phys.abundfloat[Sr/H]? Abundance [Sr/H]phys.abundfloatnullablee_[Sr/H]? Error on Sr abundancestat.error;phys.abundfloatnullable[Y/H]Abundance [Y/H]phys.abundfloate_[Y/H]Error on Y abundancestat.error;phys.abundfloat[ZrI/H]? Abundance [ZrI/H]phys.abundfloatnullablee_[ZrI/H]? Error on ZrI abundancestat.error;phys.abundfloatnullable[ZrII/H]? Abundance [ZrII/H]phys.abundfloatnullablee_[ZrII/H]? Error on ZrII abundancestat.error;phys.abundfloatnullable[Ba/H]? Abundance [Ba/H]phys.abundfloatnullable[Ba/H]NLTE? Abundance [Ba/H]_NLTEphys.abundfloatnullablee_[Ba/H]? Error on Ba abundancestat.error;phys.abundfloatnullable[La/H]? Abundance [La/H]phys.abundfloatnullablee_[La/H]? Error on La abundancestat.error;phys.abundfloatnullable[Ce/H]? Abundance [Ce/H]phys.abundfloatnullablee_[Ce/H]? Error on Ce abundancestat.error;phys.abundfloatnullable[Pr/H]? Abundance [Pr/H]phys.abundfloatnullablee_[Pr/H]? Error on Pr abundancestat.error;phys.abundfloatnullable[Nd/H]? Abundance [Nd/H]phys.abundfloatnullablee_[Nd/H]? Error on Nd abundancestat.error;phys.abundfloatnullable[Sm/H]? Abundance [Sm/H]phys.abundfloatnullablee_[Sm/H]? Error on Sm abundancestat.error;phys.abundfloatnullable[Eu/H]? Abundance [Eu/H]phys.abundfloatnullablee_[Eu/H]? Error on Eu abundancestat.error;phys.abundfloatnullableAge? Age of the starGyrtime.agefloatnullableRMeanMean Galactocentric distancekpcpos.distance;stat.meanfloatZmaxMaximum distance from Galactic planekpcpos.cartesian.z;pos.galacticfloatDisc[thin thick] Galactic sub-component (1)meta.codecharSimbadSimbad column added by the CDSmeta.ref.urlchar