J/ApJ/724/975ivo://CDS.VizieR/J/ApJ/724/975doi:10.26093/cds/vizier.17240975CDSRoederer I.U.Cowan J.J.Karakas A.I.Kratz K.-L.Lugaro M.,Simmerer J.Farouqi K.Sneden C.2022-10-26T08:46:00Z2012-08-20T09:04:15ZCDS support team

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

cds-question@unistra.frchemical-abundancesline-intensitieschemically-peculiar-starsgiant-starsvisible-astronomyspectroscopyTo better characterize the abundance patterns produced by the r-process, we have derived new abundances or upper limits for the heavy elements zinc (Zn, Z=30), yttrium (Y, Z=39), lanthanum (La, Z=57), europium (Eu, Z=63), and lead (Pb, Z=82). Our sample of 161 metal-poor stars includes new measurements from 88 high-resolution and high signal-to-noise spectra obtained with the Tull Spectrograph on the 2.7m Smith Telescope at the McDonald Observatory, and other abundances are adopted from the literature. We use models of the s-process in asymptotic giant branch stars to characterize the high Pb/Eu ratios produced in the s-process at low metallicity, and our new observations then allow us to identify a sample of stars with no detectable s-process material.2010ApJ...724..975Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/724/975CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/711/573 : Detailed abundances in a halo stellar stream (Roederer+, 2010)J/A+A/516/A46 : HE 2327-5642 abundance analysis (Mashonkina+, 2010)J/ApJS/182/80 : Rare earth abundances (Sneden+, 2009)J/ApJ/689/1031 : Heavy element abundances in giant stars (Yong+, 2008)J/ApJ/681/1524 : Detailed abundances for 28 metal-poor stars (Lai+, 2008)J/ApJ/645/613 : Abundances of HD 221170 (Ivans+, 2006)J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005)J/ApJ/617/1091 : La and Eu abundances in 85 stars (Simmerer+, 2004)J/A+A/416/1117 : Abundances in the early Galaxy (Cayrel+, 2004)J/A+A/403/1105 : Extremely metal-poor giants EWs (Francois+, 2003)J/AJ/120/1841 : Abundances and Kinematics of Halo and Disk Stars (Fulbrighthttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/724/975https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/724/975http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/724/975https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/724/975https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/724/975http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/724/975GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/724/975/table2 (Stellar abundances)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/724/975/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/724/975/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/724/975/table2?GETtext/xml+votable180.050000true33.6679122-1.20142330.0055555555555555566/51 382 800 1556 1642 1911 2133 2921 2997 3712 3865 4838 4901 5621-5622 6051 6256 7117 7251 7456 7710 7767 8266 8314 8328 8354 9065 9082 9436 9666 9831 10404 10476 10936 11177 11197 11691 12405 12451 12621 12650 12704 12793 14216 16115 16503 16540 16821 16912 17057 17099 17234 17343 17420 17726 18425 18553 18561 18839 18990 19070 19209 19211 19973 20162 20390 21269 21389 21866 22558 22635 22662 23192 23428 23734 23785 23978 24752 25444 25482 25569 25595 25963 26044 26242 26344 26347 26366 26457 26534 26576 26589 27763 27767 27796 28336 28421 28664 28966 29548 29703 29769 30528 30577 30907 30939 31417 31585 31658 31772 32352 33470 33642 34019 34559 34574 35532 35768 35784 35875 36221 36365 36705 36737 40222 40351 44208 44281 44575 44771 44793 44890 45470 45694 45797 45808 45818 45825 46155 46796 46902 46958 47092 47125 47168 48221 48501 48636 48736 48798 48824https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/724/975?format=asciiOpticaldefaultJ/ApJ/724/975/table2Stellar abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar identificationmeta.id;meta.maincharprimaryWDisplay the equivalent widths (link to Table 1)meta.ref.urlchar[Fe/H]Abundance of [Fe/H]log(Sun)phys.abund.Fefloatr_[Fe/H]Reference for [Fe/H] (see refs.dat file)meta.refintlog(ZnI)? Log of \iflay{ }\else\Ion{ZnI} \fi abundance (log(N/H)+12)phys.abundfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharnullablel_log(PbI)Limit flag on loge(PbI)meta.code.errorcharlog(YII)? Log of \iflay{ }\else\Ion{YII} \fi abundance (log(N/H)+12)phys.abundfloatnullablelog(LaII)? Log of \iflay{ }\else\Ion{LaII} \fi abundance (log(N/H)+12)phys.abundfloatnullablelog(EuII)? Log of \iflay{ }\else\Ion{EuII} \fi abundance (log(N/H)+12)phys.abundfloatnullablelog(PbI)? Log of \iflay{ }\else\Ion{PbI} \fi abundance (log(N/H)+12)phys.abundfloatnullableRefReference(s) (see refs.dat file)meta.ref;pos.framecharClass[0/3] Classification code (1)meta.code.classintS04La and Eu abundances from Simmerer et al., 2004, Cat. J/ApJ/617/1091meta.ref.urlintnullable_RAPositions form SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions form SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/ApJ/724/975/table1Zinc and yttrium equivalent widthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar identificationmeta.id;meta.maincharZnI47ZnI 4722.16{AA} equivalent width in m{AA}0.1pmspect.line.eqWidthfloatZnI48? ZnI 4810.54{AA} equivalent width in m{AA}0.1pmspect.line.eqWidthfloatnullableYII48? YII 4833.68{AA} equivalent width in m{AA}0.1pmspect.line.eqWidthfloatnullableYII50? YII 5087.42{AA} equivalent width in m{AA}0.1pmspect.line.eqWidthfloatnullableYII52? YII 5200.41{AA} equivalent width in m{AA}0.1pmspect.line.eqWidthfloatnullableJ/ApJ/724/975/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefCode referencemeta.ref;pos.frameintBibCodeBibcodemeta.bib.bibcodecharAutFirst author's namemeta.bib.authorcharCommCommentmeta.notechar