J/MNRAS/477/1760ivo://CDS.VizieR/J/MNRAS/477/1760doi:10.26093/cds/vizier.74771760CDSCalderon J.P.Bassino L.P.Cellone S.A.Gomez M.2024-08-18T20:18:58Z2021-06-28T13:30:44ZCDS support team

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

cds-question@unistra.frgalaxy-clustersphotometrygalaxy-classification-systemsradial-velocityWe present a statistical isophotal analysis of 138 early-type galaxies in the Antlia cluster, located at a distance of ~35Mpc. The observational material consists of CCD images of four 36x36arcmin^2^ fields obtained with the MOSAIC II camera at the Blanco 4-m telescope at Cerro Tololo Interamerican Observatory. Our present work supersedes previous Antlia studies in the sense that the covered area is four times larger, the limiting magnitude is M_B_~-9.6mag, and the surface photometry parameters of each galaxy are derived from Sersic model fits extrapolated to infinity. In a companion previous study we focused on the scaling relations obtained by means of surface photometry, and now we present the data, on which the previous paper is based, the parameters of the isophotal fits as well as an isophotal analysis. For each galaxy, we derive isophotal shape parameters along the semimajor axis and search for correlations within different radial bins. Through extensive statistical tests, we also analyse the behaviour of these values against photometric and global parameters of the galaxies themselves. While some galaxies do display radial gradients in their ellipticity ({epsilon}) and/or their Fourier coefficients, differences in mean values between adjacent regions are not statistically significant. Regarding Fourier coefficients, dwarf galaxies usually display gradients between all adjacent regions, while non-dwarfs tend to show this behaviour just between the two outermost regions. Globally, there is no obvious correlation between Fourier coefficients and luminosity for the whole magnitude range (-12>=M_V_>=-22); however, dwarfs display much higher dispersions at all radii.2018MNRAS.477.1760Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/477/1760CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/180 : Galaxies in Fornax Cluster and five nearby groups (Ferguson+ 1990)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/477/1760https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/477/1760http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/477/1760https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/477/1760https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/477/1760http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/477/1760GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/477/1760/table2 (Basic parameters of the Antlia galaxy sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/477/1760/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/477/1760/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/477/1760/table2?GETtext/xml+votable180.050000true156.93333-35.292220.0055555555555555566/38671 38682 38693 38704-387052.9196443747461696e-19 3.2860540898823595e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/477/1760?format=asciiOpticaldefaultJ/MNRAS/477/1760/table2Basic parameters of the Antlia galaxy sampleSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier (G1)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainMorphMorphologysrc.morphcharE(B-V)Galactic extinction E(B-V) from Schlafly & Finkbeiner, 2011ApJ...737..103Smagphot.color.excessfloatnSersic indexstat.fit.paramfloatmu0Central surface brightnessmag.arcsec**-2phot.mag.sbfloatr0Scale radiusarcsecphys.angSizefloatmueEffective surface brightnessmag.arcsec**-2phot.mag.sbfloatreEffective radiusarcsecphys.angSizefloatT1magT1-band total magnitudemagphot.mag;em.opt.RfloatC-T1(C-T1) color indexmagphot.color;em.opt.U;em.opt.RfloatRV? Radial velocitykm/sphys.veloc;pos.heliocentricintnullablee_RV? Radial velocity errorkm/sstat.errorintnullabler_RV[abc] Sources from RV (2)meta.ref;pos.framecharJ/MNRAS/477/1760/table1Geometric parameters obtained for the galaxies in the samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier (G1)meta.id;meta.maincharRange[1/5] Radial rangespect.dopplerVelocinteps? Mean values of ellipticity for radial rangesrc.ellipticityfloatnullablee_eps? rms uncertainty on epsstat.errorfloatnullablea4/a? Mean values of a4/a for radial rangesrc.morph.paramfloatnullablee_a4/a? rms uncertainty on a4/astat.errorfloatnullablea3/a? Mean values of a3/a for radial rangesrc.morph.paramfloatnullablee_a3/a? rms uncertainty on a3/astat.errorfloatnullable