J/A+A/381/420ivo://CDS.VizieR/J/A+A/381/420doi:10.26093/cds/vizier.33810420CDSAdami C.Mazure A.2002-08-10T19:32:17Z2002-08-10T18:18:47ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsredshiftedWe present an automated method to detect populations of groups in galaxy redshift catalogs. This method uses both analysis of the redshift distribution along lines of sight in fixed cells to detect elementary structures and a friend-of-friend algorithm to merge these elementary structures into physical structures. We apply this method to the SSRS2 galaxy redshift catalog (Southern Sky Redshift Survey, Da Costa et al., Cat. J/AJ/116/1). The groups detected with our method are similar to group catalogs detected with pure friend-of-friend algorithms.2002A&A...381..420Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/381/420CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/116/1 : Southern Sky Redshift Survey (Da Costa+, 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/381/420https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/381/420http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/381/420https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/381/420https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/381/420http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/381/420GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/381/420/tables (Group sample (tables 1 and 2 of the publication))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/381/420/tables?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/381/420/tables?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/381/420/tables?GETtext/xml+votable180.050000true3.2488-24.35040.0055555555555555566/16479 16540 16542 16598 16684 16772 16859 17034 17234 17237 17243 17274 17431 17498 17580 17591 17628 17674 17792 17966 18048 23077 23081 24830 24839 24894 24931 25051 25310 25321 25330 25417 25478 25504 25632 25658 25852 26133 26138 26697 26714 26723 26811 26874 27209-27210 35270 35511 35594 35612 35622 35653 35676 35719 35986 36051 36072 36253 36392 36397 36712 36719 36738 36764 36768 36822 43994 44028 44030 44872 46815 46912 46993 47002 47027-47028 47030 48349 48449 48455https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/381/420?format=asciiOpticaldefaultJ/A+A/381/420/tablesGroup sample (tables 1 and 2 of the publication)zMean redshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNgalNumber of galaxies inside groupsmeta.numberintRAJ2000Right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)degpos.eq.dec;meta.mainObsLumObserved group luminosity (luminosity before corrections)solLumphys.luminositydoubleE(B-V)Extinction at the group coordinates from Schlegel et al. (1998ApJ...500..525S)magphot.color.excessdoubleE(B-V)cfExtinction correction factorarith.factor;phys.absorptionfloatCompCompleteness correction factorarith.factor;phys.absorptionfloatTotLumGroup total luminositysolLumphys.luminositydoubleMassVirial masssolMassphys.massdoubleM/LMass to light ratio in the SSRS2 magnitude passbandphys.composition.massLightRatiofloatsigmaVelocity dispersionkm/sphys.veloc.dispersionintRvirVirial radius in h^-1^MpcMpcphys.size.radiusfloatSSSR2List the SSSR2 galaxies close to this positionmeta.refchar