J/MNRAS/351/265ivo://CDS.VizieR/J/MNRAS/351/265doi:10.26093/cds/vizier.73510265CDSDesai V.Dalcanton J.J.Mayer L.Reed D.Quinn T.Governato F.2024-06-29T20:15:06Z2005-04-26T21:54:11ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedgalaxy-kinematicsWe present galaxy circular velocity functions (GCVFs) for 34 low-redshift (z<~0.15) clusters identified in the Sloan Digital Sky Survey (SDSS, Cat. <J/AJ/123/567>), for 15 clusters drawn from dark matter simulations of hierarchical structure growth in a {LAMBDA}CDM cosmology, and for ~22000 SDSS field galaxies. We find that the simulations successfully reproduce the shape, amplitude and scatter in the observed distribution of cluster galaxy circular velocities. The power-law slope of the observed cluster GCVF is ~-2.4, independent of cluster velocity dispersion. The average slope of the simulated GCVFs is somewhat steeper, although formally consistent given the errors. We find that the effects of baryons on galaxy rotation curves is to flatten the simulated cluster GCVF into better agreement with observations. The cumulative GCVFs of the simulated clusters are very similar across a wide range of cluster masses, provided individual subhalo circular velocities are scaled by the circular velocities of the parent cluster. The scatter is consistent with that measured in the cumulative, scaled observed cluster GCVF. Finally, the observed field GCVF deviates significantly from a power law, being flatter than the cluster GCVF at circular velocities less than 200km/s.2004MNRAS.351..265Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/351/265CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/123/567 : SDSS quasar catalog. I. Early Data Release (Schneider+, 2002)J/AJ/126/2579 : SDSS quasar catalog. II. First data release (Schneider+, 2003)J/AJ/125/1817 : SDSS Early-Type Galaxies Catalog (Bernardi+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/351/265https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/351/265http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/351/265https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/351/265https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/351/265http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/351/265GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/351/265/table1 (Galaxy cluster sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/351/265/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/351/265/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/351/265/table1?GETtext/xml+votable180.050000true5.42017083-0.926158330.0055555555555555566/17810 17832 17981 18009 18012 18019 18026 18028 18063 18073 18176 23192 23208 25919 25958 26022 26193 26195 26199 26218 27045 27058 27222 27248 31384 31395-31396 31399 31401https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/351/265?format=asciiOpticaldefaultJ/MNRAS/351/265/table1Galaxy cluster samplezRedshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intRAJ2000Rigth ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainsigmaclLine-of-sight cluster velocity dispersionkm/sinte_sigmaclrms uncertainty on sigmaclkm/sintRvirVirial radius of the clusterMpcfloatVcomplCompleteness limit of the cluster galaxy circular velocity function (GCVF)km/sintlog(N200)Normalization at Vc=200km/s (1)floate_log(N200)rms uncertainty on log(N200)floatbetaSlope of the power law (1)floate_betarms uncertainty on betafloatlog(N200)fValue of log(N200) by fitting beta to its average value -2.4floate_log(N200)frms uncertainty on log(N200)ffloat