J/ApJ/549/172ivo://CDS.VizieR/J/ApJ/549/172doi:10.26093/cds/vizier.15490172CDSTran K.-V.H.Simard L.Zabludoff A.I.Mulchaey J.S.2001-06-09T21:06:04Z2001-06-09T21:05:59ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxy-classification-systemsapparent-magnitudeWe determine the quantitative morphology and star formation properties of galaxies in six nearby X-ray-detected, poor groups using multiobject spectroscopy and wide-field R imaging. The mean recessional velocities of the galaxy groups range from 2843 to 7558km/s. Each group has 1538 confirmed members ranging in luminosity from dwarfs to giants (-13.7>=M_R_-5logh>=-21.9). We measure structural parameters for each galaxy by fitting a PSF-convolved, two-component model to their surface brightness profiles. To compare the samples directly, we fade, smooth, and rebin each galaxy image so that we effectively observe each galaxy at the same redshift (9000km/s) and physical resolution (0.87h^-1^kpc). The structural parameters are combined with [O II] measurements to test for correlations between morphological characteristics and current star formation in these galaxies. We compare results for the groups to a sample of field galaxies.2001ApJ...549..172Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/549/172CatalogResearchIsServedByTAP VizieR generic servicerelated-toTable 1: Group PropertiesNotes:N: Total number of group members in the 1{deg}x1{deg} fieldD: Physical diameter subtended by 1{deg} at the group'shttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/549/172https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/549/172http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/549/172https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/549/172https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/549/172http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/549/172GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/549/172/table2Structural Parameters of Field Galaxies Measured at cz_0_ and cz=9000km/srecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField name (1)obs.fieldcharGalGalaxy number in the field (1)meta.id;meta.mainintczRedshiftkm/sphys.veloc;pos.heliocentricinte_czUncertainty in czkm/sstat.errorintRMagAbsolute R band magnitude (2)magphys.magAbs;em.optfloatEWThe [O II] (3727{AA}) equivalent width0.1nmspect.line.eqWidthfloate_EWUncertainty in EW0.1nmstat.errorfloatB/TBulge fraction (3)phot.flux.sb;arith.ratiofloatRadHalf-light radius (in kpc/h) (4)kpcphys.size.radiusfloatRatAAsymmetry parameter (in kpc/h) (5)kpcstat.fit.paramfloatRatT? Fraction of residual light (6)stat.fit.paramfloatnullableB/T9Bulge fraction at cz=9000phys.angSizefloatRad9Half-light radius at cz=9000 (in kpc/h)kpcphys.size.radiusfloatRatA9? Asymmetry parameter at cz=9000 (in kpc/h)kpcstat.fit.paramfloatnullableRatT9? Fraction of residual light at cz=9000stat.fit.paramfloatnullableJ/ApJ/549/172/table3Structural Parameters of Group Galaxies Measured at cz_0_ and cz=9000km/sB/T9Bulge fraction at cz=9000phys.angSizefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField name (1)obs.fieldcharGalGalaxy number in the field (1)meta.id;meta.mainintczRedshiftkm/sphys.veloc;pos.heliocentricinte_czUncertainty in czkm/sstat.errorintRMagAbsolute R band magnitude (2)magphys.magAbs;em.optfloatEWThe [O II] (3727{AA}) equivalent width0.1nmspect.line.eqWidthfloate_EWUncertainty in EW0.1nmstat.errorfloatB/TBulge fraction (3)phot.flux.sb;arith.ratiofloatRadHalf-light radius (in kpc/h) (4)kpcphys.size.radiusfloatRatAAsymmetry parameter (in kpc/h) (5)kpcstat.fit.paramfloatRatT? Fraction of residual light (6)stat.fit.paramfloatnullableRad9Half-light radius at cz=9000 (in kpc/h)kpcphys.size.radiusfloatRatA9? Asymmetry parameter at cz=9000 (in kpc/h)kpcstat.fit.paramfloatnullableRatT9? Fraction of residual light at cz=9000stat.fit.paramfloatnullable