J/AJ/132/137ivo://CDS.VizieR/J/AJ/132/137doi:10.26093/cds/vizier.51320137CDSCohen J.G.McWilliam A.Shectman S.Thompson I.Christlieb N.,Melendez J.Ramirez S.Swensson A.Zickgraf F.-J.2018-01-05T08:56:54Z2007-10-27T17:02:32ZCDS support team

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

cds-question@unistra.frcarbon-starschemically-peculiar-starsline-intensitiesWe have carried out a detailed abundance analysis using high-dispersion spectra from HIRES at Keck for a sample of 16 carbon stars found among candidate extremely metal-poor (EMP) stars from the Hamburg/ESO Survey (HES). We find that the Fe metallicities for the cooler C stars (Teff~5100K) have been underestimated by a factor of 10 by the standard HES tools. The results presented here provided crucial supporting data used recently by Cohen et al. (2005ApJ...633L.109C) to derive the frequency of C stars among EMP stars.2006AJ....132..137Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/132/137CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/155/651 : Evolution of extremely metal-poor stars (Herwig+, 2004)J/AJ/128/2402 : Extremely metal-poor star candidates abundances (Lai+, 2004)J/A+A/403/1105 : Extremely metal-poor giants equivalent widths (Francois+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/132/137https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/132/137http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/132/137https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/132/137https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/132/137http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/132/137GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/132/137/table1 (The Sample of C Stars Selected as EMP Candidates from the HES, Mostly from the Palomar Sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/132/137/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/132/137/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/132/137/table1?GETtext/xml+votable180.050000true2.47-18.270.0055555555555555566/16814 17160 17174 17392 17623 17679 17994 18637 18973 23240 25574 25950 26005 26057 27048 44671 44909https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/132/137?format=asciiOpticaldefaultJ/AJ/132/137/table1The Sample of C Stars Selected as EMP Candidates from the HES, Mostly from the Palomar SamplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharprimaryn_Name[egh] Individual note on Name (1)meta.notecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmagV magnitude (from ANDICAM image)magphot.mag;em.opt.VfloatImag? I magnitude (from ANDICAM image)magphot.mag;em.opt.IfloatnullableJD? Julian datedtime.epochdoublenullablen_JD[c] c: see Cohen et al. (2004ApJ...612.1107C)meta.notecharHRV? Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullablen_HRV[df] Individual note on HRV (2)meta.notechar[Fe/H]? HES metallicityphys.abund.ZfloatnullableEW[*] stars having equivalent widths dataspect.line.eqWidthcharSimbadSimbad column added by the CDScharJ/AJ/132/137/tablesEquivalent Widths of for 15 stars of the Primary Sample of C-Stars from the HES (tables 3-5 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharn_EW[a] Note for HE 0012-1441 EW (1)meta.notecharWaveLine wavelength0.1nmem.wl;spect.linefloatIonSpecies identificationmeta.idcharf_Ion[b] Flag on Species (2)meta.codecharExPotExcitation potentialeVphys.atmol.excitationfloatlog(gf)Log of the oscillator strengthphys.atmol.oscStrengthfloatl_EWLimit flag on EWmeta.code.error;spect.line.eqWidthcharEW? Equivalent width1e-13mspect.line.eqWidthfloatnullable