J/ApJ/517/650ivo://CDS.VizieR/J/ApJ/517/650doi:10.26093/cds/vizier.15170650CDSRyden B.S.Terndrup D.M.Pogge R.W.Lauer T.R.2000-03-25T08:43:21Z2000-03-25T09:42:15ZCDS support team

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

cds-question@unistra.frgalaxy-clusterssurface-photometryWe analyze new V-band images of 14 dwarf S0 galaxies and 10 dwarf elliptical galaxies in the Virgo Cluster, in combination with R-band images of 70 dwarf elliptical galaxies from an earlier paper. We compute the intensity-weighted mean ellipticity, the mean deviations from elliptical isophotes, and a newly defined parameter to measure isophotal twists. We also fit each major-axis profile to a power law {Sigma}(a) {prop.to} exp[-(a/a_s_)^n^], where n is allowed to vary. Consistent with other studies of the Virgo dwarf ellipticals, we find that the profile shapes for the entire sample is strongly peaked near n=1 (exponential profiles) and that no galaxies have n=1/4 (de Vaucouleurs profile). The faintest galaxies all have nearly exponential profiles, while the brighter ones on average have n<1. The correlation between ellipticity and the boxy/disky parameter is similar to that of large elliptical galaxies, suggesting that dwarfs may also be divided into two groups with differing internal dynamics. The Virgo dEs also show a greater degree of isophotal twisting than more luminous elliptical galaxies.1999ApJ...517..650Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/517/650CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/139/491 : BVI photometry of nearby galaxies (Makarova+, 1999)J/MNRAS/279/595 : Blue compact dwarf galaxies in Virgo (Drinkwater+ 1996)J/A+AS/127/367 : Virgo Photometry Catalogue (VPC) (Young+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/517/650https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/517/650http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/517/650https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/517/650https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/517/650http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/517/650GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/517/650/table2Results of the dwarf galaxy surface photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intVCCGalaxy number from VCC (1)intSimbadask the SIMBAD data-base about this objectcharClassGalaxy classification from VCC (1)charf_Class[N] Indicates the presence of a nucleuscharObs.YYear observation was obtained inyrintRad? Outer fiducial radius where the intensity is < 180 countsarcsecfloatnullableEllipMean ellipticityfloatf_Ellip[a] Indicates Ellip estimated in Ryden+ (1994ApJ...425...43R)charE(Rad)? Ellipticity at RadfloatnullableBox? Intensity weighted boxiness coefficientdoublenullablee_Box? Uncertainty in BoxdoublenullableTwist? Dimensionless twisting statisticdoublenullableIndex? Power law exponent of the surface brightness (2)floatnullablee_Index? Uncertainty in Indexfloatnullable