J/A+A/513/A62ivo://CDS.VizieR/J/A+A/513/A62doi:10.26093/cds/vizier.35130062CDSGiuffrida G.Sbordone L.Zaggia S.Marconi G.Bonifacio P.Izzo C.,Szeifert T.Buonanno R.2010-07-14T06:38:36Z2010-07-14T06:31:21ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryradial-velocityThe Sagittarius dwarf Spheroidal Galaxy (Sgr dSph) provides us with a unique possibility of studying a dwarf galaxy merging event while still in progress. Moving along a short-period, quasi-polar orbit in the Milky Way Halo, Sgr dSph is being tidally dispersed along a huge stellar stream. Due to its low distance (25kpc), the main body of Sgr dSph covers a vast area in the sky (roughly 15x7degrees). Available photometric and spectroscopic studies have concentrated either on the central part of the galaxy or on the stellar stream, but the overwhelming majority of the galaxy body has never been probed. The aim of the present study is twofold. On the one hand, to produce color magnitude diagrams across the extension of Sgr dSph to study its stellar populations, searching for age and/or composition gradients (or lack thereof). On the other hand, to derive spectroscopic low-resolution radial velocities for a subsample of stars to determine membership to Sgr dSph for the purpose of high resolution spectroscopic follow-up.2010A&A...513A..62Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/513/A62CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/250 : The VIMOS VLT deep survey (VVDS-DEEP) (Le Fevre+ 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/513/A62https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/513/A62http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/513/A62https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/513/A62https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/513/A62http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/513/A62GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/513/A62/catalog (Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/513/A62/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/513/A62/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/513/A62/catalog?GETtext/xml+votable180.050000true283.59012-30.564843890.0055555555555555566/28928 28930 48012 48033-48036 48038 48041-48044https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/513/A62?format=asciiOpticaldefaultJ/A+A/513/A62/catalogCatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatImagI magnitudemagphot.mag;em.opt.Ifloate_Imagrms uncertainty on Imagmagstat.error;phot.mag;em.opt.IfloatE(B-V)Interstellar reddening (1)magphot.color.excessfloatRV? VIMOS radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatnullablee_RV? rms uncertainty on RVkm/sstat.errorfloatnullableOldIDOld identification (2)meta.idcharXposX positionpixpos.cartesian.x;instr.detdoubleYposY positionpixpos.cartesian.y;instr.detdoubleRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.raindexedDEJ2000Declination in decimal degrees (J2000)degpos.eq.decindexedchi2{chi}^2^ valuestat.fit.chi2floatSharpSharp parameterstat.fit.paramfloat