J/AJ/147/136ivo://CDS.VizieR/J/AJ/147/136doi:10.26093/cds/vizier.51470136CDSRoederer I.U.Preston G.W.Thompson I.B.Shectman S.A.Sneden C.,Burley G.S.Kelson D.D.2017-06-20T13:17:37Z2014-11-22T09:07:44ZCDS support team

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

cds-question@unistra.frpopulation-ii-starschemically-peculiar-starschemical-abundancesradial-velocityline-intensitieseffective-temperatureWe present radial velocities, equivalent widths, model atmosphere parameters, and abundances or upper limits for 53 species of 48 elements derived from high resolution optical spectroscopy of 313 metal-poor stars. A majority of these stars were selected from the metal-poor candidates of the HK Survey of Beers, Preston, and Shectman. We derive detailed abundances for 61% of these stars for the first time. Spectra were obtained during a 10yr observing campaign using the Magellan Inamori Kyocera Echelle spectrograph on the Magellan Telescopes at Las Campanas Observatory, the Robert G. Tull Coude Spectrograph on the Harlan J. Smith Telescope at McDonald Observatory, and the High Resolution Spectrograph on the Hobby-Eberly Telescope at McDonald Observatory. We perform a standard LTE abundance analysis using MARCS model atmospheres, and we apply line-by-line statistical corrections to minimize systematic abundance differences arising when different sets of lines are available for analysis. We identify several abundance correlations with effective temperature. A comparison with previous abundance analyses reveals significant differences in stellar parameters, which we investigate in detail. Our metallicities are, on average, lower by {approx}0.25dex for red giants and {approx}0.04dex for subgiants. Our sample contains 19 stars with [Fe/H]<=-3.5, 84 stars with [Fe/H]<=-3.0, and 210 stars with [Fe/H]<=-2.5. Detailed abundances are presented here or elsewhere for 91% of the 209 stars with [Fe/H]<=-2.5 as estimated from medium resolution spectroscopy by Beers, Preston, and Shectman. We will discuss the interpretation of these abundances in subsequent papers.2014AJ....147..136Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/136CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)V/130 : Geneva-Copenhagen Survey of Solar neighbourhood III (Holmberg+, 2009)J/ApJ/762/26 : Most metal-poor stars. II. 190 Galactic halo starsJ/ApJ/762/25 : The most metal-poor stars in HES and SDSS. I. (Norris+, 2013)J/AJ/145/13 : Metal-poor stars from SDSS/SEGUE. I. Abundances (Aoki+, 2013)J/ApJ/742/54 : CASH project II. 14 extremely metal-poor stars (Hollek+, 2011)J/A+A/509/A93 : Carbon-enhanced metal-poor stars (Masseron+, 2010)J/A+A/522/A26 : Fe Abundances in metal-poor stars (Sbordone+ 2010)J/A+A/501/519 : Extremely metal-poor turnoff stars abundancesJ/ApJ/681/1524 : Detailed abundances for 28 metal-poor stars (Lai+, 2008)J/A+A/484/721 : HES survey. IV. Candidate metal-poor stars (Christlieb+, 2008)J/AJ/135/196 : Radial velocities of 45 metal-poor field stars (Carney+, 2008)J/ApJ/655/492 : Equivalent widths of 26 metal-poor stars (Aoki+, 2007)J/ApJ/658/1203 : Nitrogen-enhanced metal-poor stars (Johnson+, 2007)J/ApJS/168/128 : UBVRcIc photometry of FHB and metal-poor stars (Beers+, 2007)J/AJ/132/85 : Equivalent width of 33 metal-poor RHB (Preston+, 2006)J/AJ/132/137 : Abundances of extremely metal-poor carbon stars (Cohen+, 2006)J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005)J/AJ/130/2804 : Carbon abundances in metal-poor stars (Rossi+, 2005)J/AJ/128/2402 : Extremely metal-poor star candidates abundances (Lai+, 2004)J/A+A/422/527 : Metal-poor star uvby-beta photometry. X. (Schuster+, 2004)J/AJ/119/2866 : Proper motions of metal-poor stars (Beers+, 2000)J/ApJS/123/639 : UBV photometry of metal-weak candidates (Norris+, 1999)J/A+A/314/191 : Atmospheric parameters in metal-poor stars. I (Gratton+, 1996)J/ApJS/96/175 : Kinematics of Metal-Poor Stars. I. (Beers+ 1995)J/AJ/108/538 : Metal-poor MS stars UBV photometry (Preston+ 1994)J/A+A/290/885 : Abundances of very metal-poor stars (Primas+, 1994)J/AJ/103/1987 : Stars of very low metal abundance (Beers+ 1992)J/AJ/90/2089 : Stars of very low metal abundance. I (Beers+, 1985)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/147/136https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/136http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/136https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/147/136https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/147/136http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/147/136GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/147/136/stars (Photometry , stellar data , and NLTE abundance corrections)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/147/136/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/147/136/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/147/136/stars?GETtext/xml+votable180.050000true14.5993458-14.78524170.0055555555555555566/146 232 798 2426 4694 5111 5545 5555 6051 6159 6256 6348 6747 7456 7798 8093 8367 9162 9992 10404 10943 11123 11363 11920 11971 12397 12621 12704 12793 13020 13028 13628 13718 13829 13830 14385 16115 16433 16451 16456 16462 16473 16496 16501 16514 16566 16587 16609 16663 16665 16666 16679 16854 17136 17159 17160 17343 17353 17357 17370 17380 17381 17392 17420 17460 17492 17495 17564 17642 17734 17811 18483 18503 18511 18514 18578 18582 18587 18683 18707 18715 18719 18764 18768 18778 18788 18972 19017 19083 22205 22662 22664 23192 23892 23978 24685 25116 25595 25639 25656 25702 25733 25753 25755 26025 26347 26457 26534 26589 26658 27162 27330 27693 28336 29703 30577 30891 30913 30963 31291 31377 31383 31398 31418 31419 31427 31447 31543 31585 31595 31642 32468 32593 32889 33249 33470 33515 33526 33527 33596 33633 33635 33642 33696 33707 33708 34012 34232 34595 34600 34606 34684 34708 34749 34751 34762 34816 35072 35517 35532 35553 35561 35599 35649 35750 35752 35768 35772 35773 35775 35786 35875 36135 36193 36221 36365 36628 36690 36737 36745 36799 36813 36837 43360 43445 44208 44268 44281 44575 44625 44892 45017 45395 45397 45401 45404 45460 45463 45468 45470 45489 45491 45504 45514 45746 45753 45773 45790 45796 45797 45801 45804 45825 45859 45868 45881 46023 46080 46090 46370 46399 46446 46462 46532 46540 46554 46563 46565 46575 46580 46642 46646 46662 46663 46665 46668 46676 46686 46691 46695 46699 46704 46705 46760 46780 46796 46851 47014 47018 47092 47193 47204 47216 47217 47306 47344 47389 47421 47436 47458 47459 47472 47476 47478 47483 47518 47519 47540 47556 47558 47698 48129 48138 48145 48153 48160 48162 48173 48223 48234 48363 48375 48387 48388 48392 48501 48511 48517 48526 48544 48603 48613 48625 48660 48720 48728 48731 48734 48736 48798 48824 48862 48937 49009 49078https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/147/136?format=asciiOpticaldefaultJ/AJ/147/136/table2Log of observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar identifiermeta.id;meta.maincharTelThe Telescope/Instrument used (1)instr.setupcharObsObserver code (2)meta.code;obs.observercharExpExposure timestime.duration;obs.exposureintObsDateDate of the observationstime.epoch;obsnullableHJDHeliocentric Julian Datedtime.epoch;obsdoubleHRV? Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullableJ/AJ/147/136/table8Atomic datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength {lambda}; in {AA}0.1nmem.wl;meta.mainfloatprimaryCSimbad column added by the CDSmeta.ref.urlcharIonSpecies identifiermeta.idcharEPExcitation PotentialeVphys.atmol.excitationfloatloggfLog of the oscillator strengthphys.atmol.oscStrengthfloatRefReference; in refs.dat file (1)meta.ref;pos.frameintJ/AJ/147/136/table11Abundances derived from individual linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar identifiermeta.id;meta.maincharIonSpecies identifierphys.atmol.ionStagecharASimbad column added by the CDSmeta.ref.urlcharlambdaWavelength {lambda}; in {AA}0.1nmem.wlfloatl_log(e)Limit flag on log(e)meta.code.error;phys.abund;arith.zpcharlog(e)Log abundance (log{epsilon})phys.abund;arith.zpfloate_log(e)? The 1{sigma} error in log(e)stat.error;phys.abund;arith.zpfloatnullableJ/AJ/147/136/table12Mean abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonSpecies identifierphys.atmol.ionStagecharASimbad column added by the CDSmeta.ref.urlcharNlNumber of lines usedmeta.numberintl_log(e)Limit flag on log(e)meta.code.error;phys.abund;arith.zpcharlog(e)? Log mean abundance (log{epsilon})phys.abund;arith.zpfloatnullable[X/Fe]? Abundance relative to FeI and FeIIphys.abundfloatnullables_[X/Fe]? Statistical uncertainty in [X/Fe]stat.error;phys.abundfloatnullablee_[X/Fe]? Total uncertainty in [X/Fe]stat.error;phys.abundfloatnullablee2_[X/Fe]? Neutrals uncertainty in [X/Fe]stat.error;phys.abundfloatnullablee3_[X/Fe]? Ions uncertainty in [X/Fe]stat.error;phys.abundfloatnullableNameStar identifiermeta.id;meta.maincharJ/AJ/147/136/table16Line abundance corrections and uncertaintiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonSpecies identifiermeta.idcharlambdaWavelength {lambda}; in {AA}0.1nmem.wlfloatRGcor? Abundance correction for stars on the Red Giant brancharith.factorfloatnullablee_RGcor? Uncertainty in RGcorstat.error;arith.factorfloatnullableSGcor? Abundance correction for stars on the Subgiant brancharith.factorfloatnullablee_SGcor? Uncertainty in SGcorstat.error;arith.factorfloatnullableHBcor? Abundance correction for stars on the Horizontal Brancharith.factorfloatnullablee_HBcor? Uncertainty in HBcorstat.error;arith.factorfloatnullableMScor? Abundance correction for stars on the Main Sequence brancharith.factorfloatnullablee_MScor? Uncertainty in MScorstat.error;arith.factorfloatnullableJ/AJ/147/136/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintprimaryBibCodeBibliographic codemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharJ/AJ/147/136/table5Sample table of equivalent width (EW) measurementsNameStar identifiermeta.id;meta.maincharlambdaWavelength {lambda}; in {AA}0.1nmem.wlfloatIonSpecies identifierphys.atmol.ionStagecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintASimbad column added by the CDSmeta.ref.urlcharEPExcitation PotentialeVphys.atmol.excitationfloatloggfLog of the oscillator strengthphys.atmol.oscStrengthfloatEW? Equivalent width; in m{AA}1e-13mspect.line.eqWidthfloatnullablef_EW[ls] Derived abundance (1)meta.code;spect.line.eqWidthcharJ/AJ/147/136/starsPhotometry , stellar data , and NLTE abundance correctionsClStar class (1)src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar identifiermeta.id;meta.maincharprimaryf_Name[c] Star with reliable parallax and E(B-V)<0.12meta.codecharVmagV-band magnitudemagphot.mag;em.opt.VfloatE(B-V)Reddeningmagphot.color.excessfloat(B-V)0? Dereddened (B-V) color indexmagphot.color;em.opt.B;em.opt.Vfloatnullable(V-K)0? Dereddened (V-K) color indexmagphot.color;em.opt.V;em.IR.KfloatnullableTeffEffective temperatureKphys.temperature.effectiveinte_Teff1{sigma} uncertainty in TeffKstat.error;phys.temperature.effectiveintloggLog of surface gravitylog(cm.s**-2)phys.gravityfloate_logg1{sigma} uncertainty in logglog(cm.s**-2)stat.errorfloatVtMicroturbulent velocitykm/sphys.velocfloate_Vt1{sigma} uncertainty in Vtkm/sstat.errorfloat[M/H]Metallicityphys.abund.Zfloate_[M/H]1{sigma} uncertainty in [M/H] (2)stat.error;phys.abundfloat<RV>? Mean radial velocitykm/sspect.dopplerVeloc;stat.meanfloatnullabler_<RV>Reference for <RV>; in refs.dat filemeta.ref;spect.dopplerVeloc;stat.meancharB[0/3] Binarity flag: suspect if B>=2 (1)meta.code.error;spect.dopplerVeloc;stat.meanintnullableExpTotal exposure timestime.duration;obs.exposureintnullableNoNumber of observationsmeta.number;obsintnullableNeNumber of mean abundances (table12)meta.numberintnullableNaTotal abundances measurements (table11)meta.numberintnullableNwNumber of equivalent widths measured (table5)meta.numberintnullableSN3950Signal-to-noise at 3950{AA}stat.snrintnullableSN4550Signal-to-noise at 4550{AA}stat.snrintnullableSN5200Signal-to-noise at 5200{AA}stat.snrintnullableSN6750Signal-to-noise at 6750{AA}stat.snrintnullableLiI-6707? LiI (6707{AA}) non-LTE abundance correctionarith.factorfloatnullableOI-7771? OI (7771{AA}) non-LTE abundance correctionarith.factorfloatnullableOI-7774? OI (7774{AA}) non-LTE abundance correctionarith.factorfloatnullableOI-7775? OI (7775{AA}) non-LTE abundance correctionarith.factorfloatnullableNaI-5682? NaI (5682{AA}) non-LTE abundance correctionarith.factorfloatnullableNaI-5688? NaI (5688{AA}) non-LTE abundance correctionarith.factorfloatnullableNaI-5889? NaI (5889{AA}) non-LTE abundance correctionarith.factorfloatnullableNaI-5895? NaI (5895{AA}) non-LTE abundance correctionarith.factorfloatnullableKI-7664? KI (7664{AA}) non-LTE abundance correctionarith.factorfloatnullableKI-7698? KI (7698{AA}) non-LTE abundance correctionarith.factorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.main