J/A+A/465/815ivo://CDS.VizieR/J/A+A/465/815doi:10.26093/cds/vizier.34650815CDSSbordone L.Bonifacio P.Buonanno R.Marconi G.Monaco L.Zaggia S.2018-01-05T08:56:55Z2007-06-17T08:35:06ZCDS support team

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

cds-question@unistra.frmetallicityline-intensitiesglobular-star-clustersgiant-starsThe Sagittarius dwarf spheroidal galaxy is the nearest neighbor of the Milky Way. Moving along a short period quasi-polar orbit within the Halo, it is being destroyed by the tidal interaction with our Galaxy, losing its stellar content along a huge stellar stream. We study the detailed chemical composition of 12 giant stars in the Sagittarius dwarf Spheroidal main body, together with 5 more in the associated globular cluster Terzan 7, by means of high resolution VLT-UVES spectra. Abundances are derived for up to 21 elements from O to Nd, by fitting lines EW or line profiles against ATLAS 9 model atmospheres and SYNTHE spectral syntheses calculated ad-hoc. Temperatures are derived from (V-I)_0_ or (B-V)_0_ colors and gravities from FeI-FeII ionization equilibrium. The metallicity of the observed stars is between [Fe/H]=-0.9 and 0. We detected a highly peculiar "chemical signature", with undersolar alpha elements, Na, Al , Sc, V, Co, Ni, Cu, and Zn, among others, and overabundant La, Ce, and Nd. Many of these abundance ratios (in particular light-odd elements and iron peak ones) are strongly at odds with what is observed within the Milky Way, so they may be a very useful tool for recognizing populations originating within the Sagittarius dwarf. This can be clearly seen in the case of the globular Palomar 12, which is believed to have been stripped from Sagittarius: the cluster shows precisely the same chemical "oddities", thus finally confirming its extragalactic origin.2007A&A...465..815Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/465/815CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/414/503 : Abundances in the Sgr dSph (Bonifacio+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/465/815https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/465/815http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/465/815https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/465/815https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/465/815http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/465/815GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/465/815/table1 (Photometry and atmospheric parameters for the studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/465/815/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/465/815/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/465/815/table1?GETtext/xml+votable180.050000true283.4614583-30.45758330.0055555555555555566/28695 47916 48041https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/465/815?format=asciiOpticaldefaultJ/A+A/465/815/table1Photometry and atmospheric parameters for the studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintParentSgr or Ter7meta.id.parentcharStarStar number (G1)meta.id;meta.mainintAbundDetailed abundancesmeta.ref.urlcharVmagV magnitudemagphot.mag;em.opt.Vfloat(V-I)0? Dereddened V-I colour index (Sgr stars only)magphot.color;em.opt.V;em.opt.Ifloatnullable(B-V)0? Dereddened B-V colour index (Ter7 stars only)magphot.color;em.opt.B;em.opt.VfloatnullableTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatxiTurbulent velocitykm/sphys.velocfloatSimbadNameSimbad column added by the CDSmeta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/465/815/tableaEquivalent widths and abundancesAbund? Abundancephys.abundfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar number (G1)meta.id;meta.mainintIonIon namephys.atmol.ionStagecharLambdaLine laboratory wavelength (2)nmem.wl;spect.linedoubleloggfline oscillator strengthspect.line.intensityfloatr_loggfReferences for employed loggfmeta.ref;pos.framecharEW? Equivalent width (3)pmspect.line.eqWidthfloatnullableJ/A+A/465/815/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharRefReference codemeta.notechar