J/MNRAS/439/1015ivo://CDS.VizieR/J/MNRAS/439/1015doi:10.26093/cds/vizier.74391015CDSKirby E.N.Bullock J.S.Boylan-Kolchin M.KaplinghatM.Cohen J.G.2024-08-08T20:12:35Z2014-03-12T07:41:45ZCDS support team

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

cds-question@unistra.frgalaxiesradial-velocitygalaxy-kinematicsWe measured velocities of 862 individual red giant stars in seven isolated dwarf galaxies in the Local Group: NGC 6822, IC 1613, VV 124 (UGC 4879), the Pegasus dwarf irregular galaxy (DDO 216), Leo A, Cetus, and Aquarius (DDO 210). We also computed velocity dispersions, taking into account the measurement uncertainties on individual stars. None of the isolated galaxies is denser than the densest Local Group satellite galaxy. Furthermore, the isolated dwarf galaxies have no obvious distinction in the velocity dispersion-half-light radius plane from the satellite galaxies of the Milky Way and M31. The similarity of the isolated and satellite galaxies' dynamics and structural parameters imposes limitations on environmental solutions to the too-big-to-fail problem, wherein there are fewer dense dwarf satellite galaxies than would be expected from cold dark matter simulations. This data set also has many other applications for dwarf galaxy evolution, including the transformation of dwarf irregular into dwarf spheroidal galaxies. We intend to explore these issues in future work.2014MNRAS.439.1015Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/439/1015CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/133/2393 : UBVRI phot. in seven Local Group dwarfs galaxies (Massey+ 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/439/1015https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/439/1015http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/439/1015https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/439/1015https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/439/1015http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/439/1015GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/439/1015/table2 (Catalogue of velocities for 862 individual stars in 7 dwarf galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/439/1015/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/439/1015/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/439/1015/table2?GETtext/xml+votable180.050000true16.09395832.159250.0055555555555555566/5287 5293 7265 17229 18041 19990 29716 29718 48942-48943https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/439/1015?format=asciiOpticaldefaultJ/MNRAS/439/1015/table2Catalogue of velocities for 862 individual stars in 7 dwarf galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalaxyDwarf galaxy name: IC1613, NGC6822, VV124, Pegasus, LeoA, Cetus or Aquarius.meta.id.parentcharNameObject name (1)meta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainS/NSignal-to-noise ratio per Angstromstat.snrfloatHRVHeliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV[2/29] Error on HRVkm/sstat.errorfloatMmb[YN] Membership status (Yes or No)meta.code.membercharn_Mmb[Na v] Reason for non-membership (2)meta.notecharSimbadNameSimbad column added by the CDSmeta.idchar