J/ApJ/705/328ivo://CDS.VizieR/J/ApJ/705/328doi:10.26093/cds/vizier.17050328CDSKirby E.N.Guhathakurta P.Bolte M.Sneden C.Geha M.C.2011-02-23T16:10:04Z2011-02-04T13:00:35ZCDS support team

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

cds-question@unistra.frmetallicitygalaxiesvisible-astronomybroad-band-photometryWe present measurements of Fe, Mg, Si, Ca, and Ti abundances for 388 radial velocity member stars in the Sculptor dwarf spheroidal galaxy (dSph), a satellite of the Milky Way (MW). This is the largest sample of individual {alpha} element (Mg, Si, Ca, and Ti) abundance measurements in any single dSph. The measurements are made from Keck/Deep Imaging Multi-Object Spectrometer medium-resolution spectra (6400-9000{AA}, R~6500). Based on comparisons to published high-resolution (R>~20000) spectroscopic measurements, our measurements have uncertainties of {alpha}[Fe/H]=0.14 and {alpha}[{alpha}/Fe]=0.13. We have discovered one star with [Fe/H]=-3.80+/-0.28, which is the most metal-poor star known anywhere except the MW halo, but high-resolution spectroscopy is needed to measure this star's detailed abundances.2009ApJ...705..328Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/705/328CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/191/352 : Stars in Milky Way dwarf satellite galaxies (Kirby+, 2010)J/ApJ/682/1217 : Abundances in red giants in 7 globular clusters (Kirby+,J/AJ/131/375 : Exploring halo substructures. VIII. (Westfall+, 2006)J/MNRAS/363/734 : Sculptor dSph variables metal abundances (Clementini+, 2005)J/AJ/130/1065 : Members of the Sculptor dwarf spheroidal galaxy (Coleman+,J/AJ/110/2747 : Stars in Sculptor dwarf spheroidal galaxy (Schweitzer+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/705/328https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/705/328http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/705/328https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/705/328https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/705/328http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/705/328GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/705/328/table6 (Multi-element abundances in Sculptor)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/705/328/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/705/328/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/705/328/table6?GETtext/xml+votable180.050000true14.84-33.7161110.0055555555555555566/35549 357202.285239626323992e-19 4.272473093760679e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/705/328?format=asciiOpticaldefaultJ/ApJ/705/328/table6Multi-element abundances in Sculptore_MmagUncertainty in Mmagmagstat.error;phot.mag;em.IR.4-8umfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMmagWashington M band magnitudemagphot.mag;em.opt.VfloatT2magWashington T2 band magnitudemagphot.mag;em.opt.Ifloate_T2magUncertainty in T2magmagstat.error;phot.magfloatTeffEffective temperatureKphys.temperature.effectiveintloggLog of surface gravitylog(cm.s**-2)phys.gravityfloatvtMicroturbulent velocitykm/sphys.velocfloat[Fe/H]Iron abundance relative to the Sunlog(Sun)phys.abund.Fefloate_[Fe/H]Uncertainty in [Fe/H]log(Sun)stat.error;phys.abund.Fefloat[Mg/Fe]? Magnesium-to-iron ratio relative to the Sunlog(Sun)phys.abundfloatnullablee_[Mg/Fe]? Uncertainty in [Mg/Fe]log(Sun)stat.error;phys.abundfloatnullable[Si/Fe]? Silicon-to-iron ratio relative to the Sunlog(Sun)phys.abundfloatnullablee_[Si/Fe]? Uncertainty in [Si/Fe]log(Sun)stat.error;phys.abundfloatnullable[Ca/Fe]? Calcium-to-iron ratio relative to the Sunlog(Sun)phys.abundfloatnullablee_[Ca/Fe]? Uncertainty in [Ca/Fe]log(Sun)stat.error;phys.abundfloatnullable[Ti/Fe]? Titanium-to-iron ratio relative to the Sunlog(Sun)phys.abundfloatnullablee_[Ti/Fe]? Uncertainty in [Ti/Fe]log(Sun)stat.error;phys.abundfloatnullableRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.main