J/MNRAS/429/3272ivo://CDS.VizieR/J/MNRAS/429/3272doi:10.26093/cds/vizier.74293272CDSChon G.Bohringer H.Nowak N.2024-07-20T20:13:58Z2017-01-30T12:18:08ZCDS support team

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

cds-question@unistra.frgalaxy-clustersx-ray-sourcesWe present the first supercluster catalogue constructed with the extended ROSAT-ESO Flux-Limited X-ray (REFLEX II) Galaxy Cluster survey data, which comprises 919 X-ray selected galaxy clusters with a flux limit of 1.8x10^-12^erg/s/cm2. Based on this cluster catalogue we construct a supercluster catalogue using a friends-of-friends algorithm with a linking length depending on the (local) cluster density, which thus varies with redshift. The resulting catalogue comprises 164 superclusters at redshift z<=0.4. The choice of the linking length in the friends-of-friends method modifies the properties of the superclusters. We study the properties of different catalogues such as the distributions of the redshift, extent and multiplicity by varying the choice of parameters. In addition to the supercluster catalogue for the entire REFLEX II sample, we compile a large volume-limited cluster sample from REFLEX II with the redshift and luminosity constraints of z<=0.1 and L_X_>=5x10^43^erg/s. With this catalogue we construct a volume-limited sample of superclusters. This sample is built with a homogeneous linking length, and hence selects effectively the same type of superclusters. By increasing the luminosity cut we can build a hierarchical tree structure of the volume-limited samples, where systems at the top of the tree are only formed via the most luminous clusters. This allows us to test if the same superclusters are found when only the most luminous clusters are visible, comparable to the situation at higher redshift in the REFLEX II sample. We find that the selection of superclusters is very robust, independent of the luminosity cut, and the contamination of spurious superclusters among cluster pairs is expected to be small. Numerical simulations and observations of the substructure of clusters suggest that regions of high cluster number density provide an astrophysically different environment for galaxy clusters, where the mass function and X-ray luminosity function are shifted to higher cut-off values and an increased merger rate may also boost some of the cluster X-ray luminosities. We therefore compare the X-ray luminosity function for the clusters in superclusters with that for the field clusters with the flux- and volume-limited catalogues. The results mildly support the theoretical suggestion of a top-heavy X-ray luminosity function of galaxy clusters in regions of high cluster density.2013MNRAS.429.3272Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/429/3272CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/555/A30 : REFLEX II. Properties of the survey (Boehringer+ 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/429/3272https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/429/3272http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/429/3272https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/429/3272https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/429/3272http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/429/3272GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/429/3272/table2 (List of the volume-limited superclusters (LX,0))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/429/3272/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/429/3272/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/429/3272/table2?GETtext/xml+votable180.050000true359.459-30.0050.005555555555555556Cone search capability for table J/MNRAS/429/3272/tableb1 (List of the REFLEX II superclusters constructed with mean cluster density f=10)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/429/3272/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/429/3272/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/429/3272/tableb1?GETtext/xml+votable180.050000true359.546-2.0610.0055555555555555566/16403 16407 16411 16414 16511 16533 16586 16592 16643 16714 16721 16766 16781 16806 16819 16860 16956 17069 17133 17376 17401 17410 17448 17457 17747 17818 18005 18021 18067 18596 18614 18619 18669 18747 19101 20491 20508 20643 20661 21072 21131 21153 22553 22572 22588 22620 22931 22947 23091 23105 23184 23296 24634 24698 24746 24855 25040 25048 25146 25189 25207 25303 25384 25551 25683 25762 25785 26182 26185 26287 26667 26773 26786 27075 27207 29959 30946 31111 31121 31285 31290 31396 32910 33275 33625 33637 33962 34095 34153 34169 34441 34446 34481 34567 34914 35022 35040 35122 35182 35676 35773 35952 35976 36019 36036 36051 36147 36432 36738 36843 36894 38857 39072 39076 39085 39437 39613 40205 40351 40430 40801 40807 40931 40988 43757 43822 43833 43848 43923 43945 43992 44210 44246 44792 44804 44879 44904 45019 45041 45114 45247 45266 45325 45505 45508 45562 45565 45723 45821 45904 45978 45986-45987 46079 46262 46652 46654 46884 46923 46998 47199 47231 47302 47487 47490 47495 47557 47560 47614 47701 48129 48256 48333 48372 48427 48457 48489 48494 48655 48710 48945 49089https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/429/3272?format=asciiX-raydefaultJ/MNRAS/429/3272/table2List of the volume-limited superclusters (LX,0)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRXSCSupercluster RXSC designation (JHHMM+DDMM)meta.id;meta.maincharRAJ2000Supercluster right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Supercluster declination (J2000) (1)degpos.eq.dec;meta.mainzSCSupercluster redshift (1)src.redshift;pos.heliocentricfloatRmaxHalf the maximum extent between clusters in the superclusterMpcpos.distancefloatLXTotal X-ray luminosity (2)1e+37W.S**-1phys.luminosity;em.X-rayfloatMulNumber of member clustersmeta.numberintIDCorresponding supercluster ID(s) in tableb1.dat (3)meta.idcharn_ID[+1] Note on ID (4)meta.notecharf50Flag for the presence in mean cluster density f=50 catalog (5)meta.codecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/429/3272/tableb1List of the REFLEX II superclusters constructed with mean cluster density f=10recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRXSCSupercluster RXSC designation (JHHMM+DDMM)meta.id;meta.maincharRAJ2000Supercluster right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Supercluster declination (J2000) (1)degpos.eq.dec;meta.mainzSCSupercluster redshift (1)src.redshift;pos.heliocentricfloatRmaxHalf the maximum extent between clusters in the superclusterMpcpos.distancefloatLXTotal X-ray luminosity (2)1e+37W.S**-1phys.luminosity;em.X-rayfloatMulNumber of member clustersmeta.numberintf50Flag for the presence in f=50 catalog (3)meta.codecharIDSequential number of the superclustermeta.idintSimbadSimbad column added by the CDSmeta.ref.urlchar