J/ApJ/527/573ivo://CDS.VizieR/J/ApJ/527/573doi:10.26093/cds/vizier.15270573CDSKobayashiC.Arimoto N.2000-07-23T22:21:10Z2000-07-23T22:21:02ZCDS support team

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

cds-question@unistra.frmetallicitygalaxiesvisible-astronomyspectroscopyWe have restudied line-strength gradients of 80 elliptical galaxies. Typical metallicity gradients of elliptical galaxies are {delta}[Fe/H]/{delta}log(r){=~}-0.3, which is flatter than the gradients predicted by monolithic collapse simulations. The metallicity gradients do not correlate with any physical properties of galaxies, including central and mean metallicities, central velocity dispersions {sigma}_0_, absolute B magnitudes M_B_, absolute effective radii R_e_, and dynamical masses of galaxies. By using the metallicity gradients, we have calculated mean stellar metallicities for individual ellipticals. Typical mean stellar metallicities are <[Fe/H]> {=~} -0.3 and range from <[Fe/H]>{=~}-0.8 to +0.3, which is contrary to what Gonzalez & Gorgas (1996) claimed; the mean metallicities of ellipticals are not universal. The mean metallicities correlate well with {sigma}_0{sigma}_ and dynamical masses, though relations for M_B_ and R_e_ include significant scatters.1999ApJ...527..573Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/527/573CatalogResearchIsServedByTAP VizieR generic servicerelated-toVII/176 : Photometry and Spectroscopy of Elliptical Galaxies (Faber+ 1989)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/527/573https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/527/573http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/527/573https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/527/573https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/527/573http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/527/573GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/527/573/table1Line-Strength Gradients of EllipticalsNameElliptical galaxy namecharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intSimbadask the SIMBAD data-base about this objectcharr_NameReference for Object (see refs.dat)charIndexIndex identificationcharIntercIndex intercept at the effective radius (1)floate_IntercError on IntercfloatGradIndex gradient (1)floate_GradError on GradfloatJ/ApJ/527/573/table2Metallicity Gradients and Mean MetallicitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNameElliptical galaxy namecharprimarySimbadask the SIMBAD data-base about this objectcharr_NameReference for Object (see refs.dat)charZMg2? Mg2 metallicity at the effective radiusfloatnullablecMg2? Mg2 metallicity index (1)floatnullableZMgb? Mgb metallicity at the effective radiusfloatnullablecMgb? Mgb metallicity index (1)floatnullableZFe1? Fe1 metallicity at the effective radiusfloatnullablecFe1? Fe1 metallicity index (1)floatnullableZFe2? Fe2 metallicity at the effective radiusfloatnullablecFe2? Fe2 metallicity index (1)floatnullable[Fe/H]Mg2? Mean [Fe/H] derived from Mg2 indexlog(Sun)floatnullable[Fe/H]Mgb? Mean [Fe/H] derived from Mgb indexlog(Sun)floatnullable[Fe/H]Fe1? Mean [Fe/H] derived from Fe1 indexlog(Sun)floatnullable[Fe/H]Fe2? Mean [Fe/H] derived from Fe2 indexlog(Sun)floatnullableJ/ApJ/527/573/table4Physical Properties of Elliptical GalaxiesMTypeGalaxy morphologycharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intNameElliptical galaxy namecharprimarySimbadask the SIMBAD data-base about this objectcharr_NameReference for Object (see refs.dat)charMg2? MgII line index from Davies+ (1987ApJS...64..581D)magfloatnullableLogVD? Log of the velocity dispersion from Davies+ (1987ApJS...64..581D)log(km.s**-1)floatnullableRad? Effective radiuskpcfloatnullableBMag? Absolute B band magnitudemagfloatnullableMTrace? Mass Tracer (1)floatnullableJ/ApJ/527/573/refsReferences for tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intRefReference code used in tables 1, 2 and 4charBibCodeBibcode of the referencecharTextFull referencechar