J/MNRAS/380/281ivo://CDS.VizieR/J/MNRAS/380/281doi:10.26093/cds/vizier.73800281CDSMartin N.F.Ibata R.A.Chapman S.C.Irwin M.Lewis G.F.2024-07-05T20:15:27Z2008-02-29T21:27:30ZCDS support team

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

cds-question@unistra.frgalaxiesphotometryspectroscopyradial-velocityWe present the results of a spectroscopic survey of the recently discovered faint Milky Way satellites Bootes, Ursa Major I, Ursa Major II and Willman 1 (Wil1). Using the DEep Imaging Multi-Object Spectrograph mounted on the Keck II telescope, we have obtained samples that contain from ~15 to ~85 probable members of these satellites for which we derive radial velocities precise to a few km/s down to i~21-22. About half of these stars are observed with a high enough signal-to-noise ratio to estimate their metallicity to within +/-0.2dex. The characteristics of all the observed stars are made available, along with those of the Canes Venatici I dwarf galaxy that have been analysed in a companion paper.2007MNRAS.380..281Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/380/281CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://sdss.org : SDSS Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/380/281https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/380/281http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/380/281https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/380/281https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/380/281http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/380/281GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/380/281/tables (Derived parameters for stars in the 5 samples)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/380/281/tables?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/380/281/tables?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/380/281/tables?GETtext/xml+votable180.050000true210.098958314.51286110.0055555555555555566/5939 5945 6021 6023 6032 7416 8745 10444 104462.381800341673347e-19 4.653515163505597e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/380/281?format=asciiOpticaldefaultJ/MNRAS/380/281/tablesDerived parameters for stars in the 5 samplesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSampleSample name (Boo, CVnI, UMaI, UMaII or Wil1)meta.idcharRAJ2000SDSS right ascension (J2000.0) (1)pos.eq.ra;meta.mainDEJ2000SDSS declination (J2000.0)pos.eq.dec;meta.maingmagSDSS g magnitudemagphot.mag;em.opt.BfloatimagSDSS i magnitudemagphot.mag;em.opt.IfloatRVMeasured radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatS/NSignal-to-noise ratio of the spectrum (in {AA}^-1^)0.1nm**-1stat.snrint[Fe/H]? Derived metallicity of Boo members with S/N>10{AA}^-1^log(Sun)phys.abund.ZfloatnullableEWCaWeighted sum of the EWs of the three CaI lines at 8498, 8542 and 8662{AA}0.1nmspect.line.eqWidthfloatEWNaSum of the EWs of the two NaI lines at 8193 and 8195{AA}0.1nmspect.line.eqWidthfloatMm[y/n] Status of the stars that were used to derive the parameters of the dwarf (2)meta.code.membercharSDSSdataDisplay the SDSS datameta.ref.urlchar