J/AN/327/365ivo://CDS.VizieR/J/AN/327/365doi:10.26093/cds/vizier.113270365CDSTago E.Einasto J.Saar E.Einasto M.Suhhonenko I.Joeveer M.,Vennik J.Heinamaki P.Tucker D.L.2025-09-29T20:17:33Z2008-02-04T13:24:52ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryWe create a new catalogue of groups and clusters, applying the friends-to-friends method to the 2dF GRS final release. We investigate various selection effects due to the use of a magnitude limited sample. For this purpose we follow the changes in group sizes and mean galaxy number densities within the groups when shifting nearby observed groups to larger distances. We study the distribution of sizes of dark matter haloes in N-body simulations and compare properties of these haloes and the 2dF groups.2006AN....327..365Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AN/327/365CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/226 : The 2dF Galaxy Redshift Survey 100k Data Release (2dFGRS Team, 2001)VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)J/MNRAS/328/805 : The 2dF QSO Redshift Survey. VIII (Outram+, 2001)J/A+A/462/811 : Superclusters of galaxies from 2dF (Einasto+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AN/327/365https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AN/327/365http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AN/327/365https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AN/327/365https://vizier.iucaa.in/viz-bin/votable?-source=J/AN/327/365http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AN/327/365GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AN/327/365/groups (Catalogue of the 2dF GRS Groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AN/327/365/groups?https://vizier.iucaa.in/viz-bin/conesearch/J/AN/327/365/groups?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AN/327/365/groups?GETtext/xml+votable180.050000true153.100693-3.516750.005555555555555556Cone search capability for table J/AN/327/365/grGal (Catalogue of the 2dF GRS galaxies in the groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AN/327/365/grGal?https://vizier.iucaa.in/viz-bin/conesearch/J/AN/327/365/grGal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AN/327/365/grGal?GETtext/xml+votable180.050000true153.106583-3.482060.005555555555555556Cone search capability for table J/AN/327/365/isoGal (Catalogue of isolated galaxies in the 2dF GRS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AN/327/365/isoGal?https://vizier.iucaa.in/viz-bin/conesearch/J/AN/327/365/isoGal?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AN/327/365/isoGal?GETtext/xml+votable180.050000true153.131195-3.853750.0055555555555555563/257-258 557-558 561-562 733-734 4/1027 1036 1040 1056 1599 1613 1615 1619-1620 1622 1624 1626 1635-1638 1640-1642 1677-1679 1681-1686 1688-1690 1700-1701 2207 2227 2236 2252 2272 2911 2929-2931 2940 2942 5/4101-4103 4105-4107 4148 4152 4164 4168 4228 4230 4232-4234 6383 6389-6391 6393-6395 6447 6451 6457-6459 6469-6471 6473 6475 6484 6486 6500-6502 6508 6533-6535 6537-6539 6556 6572 6576 6592 6687 6703 6707 6723 6748 6764 6768 6788-6789 6791 6808-6809 6811-6812 6848 6912 8821-8823 8825 8827 8887 8891 8893-8895 8903 8905 8907 8948 8952 8967 8970-8971 8973-8975 9012 9014 9016 9018 9092 9096 11247 11256 11258-11259 11637-11639 11642-11643 11701 11703 11709 11711 11764-11766 12096-12097 12100-12101 12103 12112 6/16399 16403 16596-16598 16600-16602 16612-16614 16616-16618 16660-16662 16664-16665 16676-16678 16680-16682 16916-16918 16924-16926 16940-16942 16944-16946 17024-17026 25471 25527 25531 25543 25549 25551 25554-25555 25570-25571 25723 25727 25783 25803 25825-25827 25871 25891 25897-25899 25942 25948-25950 25968-25970 26012-26014 26036-26038 26040-26042 26048-26050 26052-26053 26119 26125 26127 26130-26131 26147 26228-26230 26232-26234 26292-26294 26296-26298 26308-26310 26312-26314 26372-26374 26376-26378 26743 26747 26807 26811 26823 26827 26887 26891 26996-26998 27000-27002 27060-27062 27064-27066 27076-27078 27080-27082 27143 27160-27161 27163 27188-27189 27241 27243 27252-27254 27256-27258 27332-27333 27396-27398 27400-27402 27652-27654 27656-27658 34554-34555 35263 35279 35299 35305-35307 35519 35539 35542-35543 35545 35547 35555 35558-35559 35561-35563 35569-35571 35605 35607 35610-35611 35619 35625 35627 35796 35798 35800-35802 35812-35814 35816 35818 35863 35867 35877-35879 35889-35891 36052-36053 36055 36060 36062 36068 36070-36071 36076-36078 36098 36104 36130 36136 36138 36224 36226 36372 36374 36376-36378 36388 36390 36392-36394 44983 45030-45031 45050 46463 46527 46543 46547 46563 46565-46567 46711 46717-46719 46801-46803 46809 47068-47070 47088-47090 47096 48213 48408-48409 48452 48456https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AN/327/365?format=asciiOpticaldefaultJ/AN/327/365/groupsCatalogue of the 2dF GRS GroupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_GroupSimbad column added by the CDSmeta.id.part;meta.maincharGroupGroup numbermeta.id;meta.mainintRichRrichness (number of member galaxies)meta.noteintRAJ2000Right ascension, in decimal degrees (J2000) (mean of member galaxies)degpos.eq.ra;meta.mainDEJ2000Declination, in decimal degrees (J2000) (mean of member galaxies)degpos.eq.dec;meta.maincdistComoving distance in Mpc/h (mean of member galaxies)Mpcpos.distancedoubleSizeSkyMaximum projected size (in Mpc/h)Mpcphys.angSizefloatsigmarms radial velocity (velocity dispersion)km/sstat.stdev;spect.dopplerVelocfloatRvirVirial radius in Mpc/hMpcphys.size.radiusfloatLgal1Luminosity of the main galaxy (G1)solLumphys.luminositydoubleLgalvTotal observed luminosity of galaxies in the visibility window (G1)solLumphys.luminositydoubleLtot1Estimated total luminosity of the group using param. set 1 (G1)solLumphys.luminositydoubleLtot2Estimated total luminosity of the group using param. set 2 (G1)solLumphys.luminositydoubleJ/AN/327/365/grGalCatalogue of the 2dF GRS galaxies in the groupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_GalaxySimbad column added by the CDSmeta.id.part;meta.maincharGalaxyGalaxy ID numbermeta.idintGroupGroup ID numbermeta.id;meta.mainintRichGroup richnesssrc.class.richnessintRAJ2000Right ascension, in decimal degrees (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination, in decimal degrees (J2000)degpos.eq.dec;meta.mainindexedzOriginal redshiftsrc.redshiftdoublecdistCo-moving distance in Mpc/h, corrected for the CMBMpcpos.distancedoublebjmagbj magnitudemagphot.mag;em.opt.BfloatbjMAGAbsolute magnitudemagphys.magAbsfloatbj-brColour bj-brmagphot.color;em.opt.B;em.opt.RfloatSpClass? spectral classification (if -99 then absent) (eta)spect.indexdoublenullableVpecPeculiar velocitykm/sphys.velocdoubleLobsObserved luminositysolLumphys.luminositydoubleLtotEstimated total luminositysolLumphys.luminositydoubleJ/AN/327/365/isoGalCatalogue of isolated galaxies in the 2dF GRSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_GalaxySimbad column added by the CDSmeta.id.part;meta.maincharGalaxyGalaxy ID numbermeta.idintRAJ2000Right ascension, in decimal degrees (J2000) (mean of member galaxies)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000), in decimal degrees (mean of member galaxies)degpos.eq.dec;meta.mainindexedcdistComoving distance in Mpc/h (mean of member galaxies)Mpcpos.distancedoubleLgalLuminosity of the cluster main galaxy (G1)solLumphys.luminositydoubleLgalvTotal observed luminosity of galaxies in the visibility window (G1)solLumphys.luminositydoubleLtotEstimated total luminosity of the group (G1)solLumphys.luminositydouble