J/MNRAS/329/87ivo://CDS.VizieR/J/MNRAS/329/87doi:10.26093/cds/vizier.73290087CDSde Propris R.Couch W.J.Colless M.Dalton G.B.Collins C.Baugh C.M.,Bland-Hawthorn J.Bridges T.Cannon R.Cole S.Cross N.Deeley K.,Driver S.P.Efstathiou G.Ellis R.S.Frenk C.S.Glazebrook K.,Jackson C.Lahav O.Lewis I.Lumsden S.Maddox S.Madgwick D.,Moody S.Norberg P.Peacock J.A.Percival W.Peterson B.A.,Sutherland W.Taylor K.2024-06-27T20:17:58Z2006-11-24T13:37:59ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedgalaxy-kinematicsWe have carried out a study of known clusters within the 2dF Galaxy Redshift Survey (2dFGRS, Cat. <VII/226>) observed areas and have identified 431 Abell, 173 APM and 343 EDCC clusters. Precise redshifts, velocity dispersions and new centroids have been measured for the majority of these objects, and this information is used to study the completeness of these catalogues, the level of contamination from foreground and background structures along the cluster's line of sight, the space density of the clusters as a function of redshift, and their velocity dispersion distributions. We find that the Abell and EDCC catalogues are contaminated at the level of about 10 per cent, whereas the APM catalogue suffers only 5 per cent contamination. If we use the original catalogue centroids, the level of contamination rises to approximately 15 per cent for the Abell and EDCC catalogues, showing that the presence of foreground and background groups may alter the richness of clusters in these catalogues. There is a deficiency of clusters at z~0.05 hat may correspond to a large underdensity in the Southern hemisphere. From the cumulative distribution of velocity dispersions for these clusters, we derive a space density of {sigma}>1000km/s clusters of 3.6x10^-6^h^3^/Mpc^3^. This result is used to constrain models for structure formation; our data favour low-density cosmologies, subject to the usual assumptions concerning the shape and normalization of the power spectrum.2002MNRAS.329...87Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/329/87CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/226 : The 2dF Galaxy Redshift Survey (Colless+ 2001)J/MNRAS/329/227 : 2dF Galaxy Redshift Survey. II. (Sadler+, 2002)VII/110 : Rich Clusters of Galaxies (Abell+ 1989)VII/175 : Edinburgh-Durham Southern Galaxy Cluster Cat. (Lumsden+ 1992)J/MNRAS/289/263 : Galaxy clusters from the APM galaxy survey (Dalton+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/329/87https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/329/87http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/329/87https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/329/87https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/329/87http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/329/87GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/329/87/table1 (2dF cluster catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/329/87/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/329/87/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/329/87/table1?GETtext/xml+votable180.050000true3.8279601-26.04934710.0055555555555555565/4111 4135-4136 8936 8939 8994 9005 9088-9089 9091 9096 11711 11727-11728 11740 11743 11768 6/16406-16407 16411-16414 16422 16427-16429 16431-16434 16440-16441 16449-16450 16454 16456 16458 16460 16464 16468 16471-16473 16475 16477 16481-16482 16484 16486-16488 16490 16492 16494 16500-16502 16504-16505 16507 16510 16514-16515 16520-16521 16525-16528 16531 16533 16537-16539 16548 16550-16551 16553 16555-16556 16561 16577-16580 16582-16584 16586 16590-16591 16593-16594 16600 16608-16610 16642-16643 16648 16650-16651 16654-16656 16665 16673 16676 16820 16822 16898 16902 16908-16909 16911 16913-16916 16918 16923-16924 16930-16931 16933 16937-16938 16940 16999 17075 17133 17141 17144 17176 17300 17448 17450 17567 25557 25562 25564 25583 25594-25595 25805 25834 25848 25852 25897 25919 25935 26135 26141 26149 26166-26167 26185 26200 26254 26262 26271 26282 26289 26377 26815 26830 26834 26839 26842 26848 26852 26854 26893 26895 26900 26903 26906 26908 26917 26930 26944 26949 26951 26960 26962-26965 26987 26990-26991 27015 27017 27026 27031 27039 27052-27054 27060 27064 27074 27082 27161 27206 27214 27224-27225 27238 27244 27248 27398 33261 33463 33469 33471 33512 33680 33731 33740 33771 33955 33962 34009 34295 34311 34349 34371 34373-34374 34377 34461 34504 34515 34694 34731 34827 34830 34849 34891 34894 35038 35046-35047 35049 35052 35056 35084 35159 35164-35165 35178 35235 35263 35283 35292 35302 35305-35306 35308 35310 35314-35315 35320-35321 35323-35325 35327 35342 35380 35421 35434 35505 35521 35543 35549-35550 35563 35565-35566 35571-35573 35579 35582 35621 35623 35628-35629 35632 35634-35635 35638-35640 35642 35645 35651 35653 35657-35660 35664-35666 35671 35677 35679-35680 35682-35683 35687 35690 35692 35695 35702 35704-35705 35708 35710-35711 35714 35716 35719-35721 35725 35729 35731 35734-35735 35737-35738 35741-35743 35750-35751 35753-35755 35765-35766 35776 35780 35782-35783 35787-35790 35800 35808 35848 35878-35879 35883-35884 35886 35889 35891 35894 35896 35898 35906 35914 35921 35923 35926 35929 35931-35934 35941 35943 35947 35950 35952 35954 35959-35962 35970-35971 35973-35974 35980 35985 35995 35998-35999 36009-36013 36017 36024 36026 36028-36029 36031 36038 36043-36044 36047-36048 36053 36057-36058 36062 36065-36066 36070 36073 36098 36361-36363 36368 36393 36525 36605 45035 45349 45360 45362 45451 45502 45558 46033 46041 46046-46047 46068 46115 46120 46223 46234 46256 46272 46311 46437 46449 46550-46551 46559 46566 46571-46573 46575 46577-46578 46586 46591 46622 46669 46680 46719 46764 46812 46837 46841 46843 46866-46867 46870-46871 46875 46879 46881 46883 46887-46889 46891-46892 46894 46899 46907 46920-46921 46924 46926-46928 46931 46933 46936 46938 46940-46942 46950 46952 46954 46956 46967-46968 46978 46980 46982-46983 46987-46988 46991 46995-46996 46999 47002 47005 47007-47008 47010-47011 47013-47016 47018 47021-47022 47025-47026 47029-47031 47036-47037 47039 47044 47049 47051 47055 47059 47065 47067-47068 47077 47083-47084 47086-47088 47090 48385-48386 48390-48391 48400 48406-48407 48412 48414 48448 48456 48486 48493 48504 48548 48577 48609 48612https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/329/87?format=asciiOpticaldefaultJ/MNRAS/329/87/table12dF cluster cataloguee_cz? rms uncertainty on czkm/sstat.errorintnullablesigma? Velocity dispersionkm/sphys.veloc.dispersionintnullableE_sigma? Error in sigma (+ve)km/sstat.error;stat.maxintnullablee_sigma? Error in sigma (-ve)km/sstat.errorintnullableNclus? Number of cluster membersmeta.numberintnullableComp? Redshift completeness in the 2{deg} diameter tile where the cluster is located%meta.notefloatnullableNotesNotes (1)meta.notecharSimbadSimbad column added by the CDSmeta.refcharNEDSimbad column added by the CDSmeta.refchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster name (ACO, APMCC or EDCC)meta.id;meta.maincharn_Name[*] * for double or triple systems where more than one identifiable cluster or group is present in the line of sightmeta.notecharAPMCC? APMCC number (Dalton et al., 1997, Cat. <J/MNRAS/289/263>)meta.idintnullableEDCC? EDCC number (Lumsden et al., 1992, Cat. <VII/175>)meta.idintnullableRA1950Cluster centroid right ascension (1950)pos.eq.ra;meta.mainDE1950Cluster centroid declination (1950)pos.eq.dec;meta.mainczp? Previous czkm/sphys.veloc;pos.heliocentricintnullablecz? 2DF czkm/sphys.veloc;pos.heliocentricintnullable