J/A+A/602/A100ivo://CDS.VizieR/J/A+A/602/A100doi:10.26093/cds/vizier.36020100CDSTempel E.Tuvikene T.Kipper R.Libeskind N.I.2019-08-06T11:19:13Z2017-06-21T08:45:06ZCDS support team

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

cds-question@unistra.frgalaxy-clustersoptical-observationcatalogsgalaxiesGalaxy groups and clusters are the main tools to test cosmological models and to study the environmental effect of galaxy formation. This work aims to provide a catalogue of galaxy groups/clusters and potentially merging systems based on the SDSS main galaxy survey. We identify galaxy groups and clusters using the modified friends-of-friends (FoF) group finder that is designed specifically for flux-limited galaxy surveys. FoF group membership is refined by multimodality analysis to find subgroups and by using the group virial radius and escape velocity to expose unbound galaxies. We look for merging systems by comparing distances between group centres with group radii. The analysis results in a catalogue of 88 662 galaxy groups with at least two members. Among them are 6873 systems with at least 6 members which we consider as more reliable groups. We find 498 group mergers with up to six groups.2017A&A...602A.100Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/602/A100CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/525/A157 : SDSS automated morphology classificationhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/602/A100https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/602/A100http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/602/A100https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/602/A100https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/602/A100http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/602/A100GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/602/A100/table1 (Catalog of galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/602/A100/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/602/A100/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/602/A100/table1?GETtext/xml+votable180.050000true122.06097623516.3691327770.005555555555555556Cone search capability for table J/A+A/602/A100/table2 (Catalog of galaxy groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/602/A100/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/602/A100/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/602/A100/table2?GETtext/xml+votable180.050000true121.99745310416.4144911380.0055555555555555561/5 8 10 27 2/16-17 19 25 28 38 103 107 3/72-73 75 97 116 144 146-147 176-178 184 407 409-411 421 423 427 491 494 4/297 299 399 468-469 472 580 582-583 592 594 600 602 624 716 718 740 744-746 1373 1375 1599 1621-1623 1625-1627 1691 1703 1707 1961-1963 1980 1982-1983 2027 5/1184-1185 1187 1193 1540-1541 1549 1585 1588-1589 1685 1728-1729 1732-1733 1880-1882 1884 1896-1898 1900-1901 2325 2327 2504-2506 2528 2530 2536 2868 2870 2876 2878 2968-2970 2988 5461-5463 5469 5471 5491 5588-5589 5591 5597 5599 6391 6395 6461-6463 6477-6479 6481-6483 6497-6499 6535 6541-6543 6757-6759 6761-6763 6805-6807 6809-6811 6821-6823 6825-6827 7786 7823 7829-7830 7833-7834 7838-7839 7841-7843 7882-7883 7886 7924 7926 8099 8102-8103 8105 8107 8114 8120 8122 8125 8127 8170 11261-11263 6/4744-4745 4747 4769 4780-4781 4783 6149 6168-6169 6172-6173 6175 6205 6207 6337 6339 6362-6363 6365-6367 6739 6976-6977 6980-6981 6992-6993 6996-6997 7532-7533 7540 7568-7570 7572-7573 7576 7579 7582-7583 7596-7597 7608-7609 7612-7613 7680-7681 7684-7685 7696-7697 7700-7701 9306-9307 9520 9522 9528 9530 9616 9618 9624-9626 9648 9650 9656 9658 10000 10028 10030 10116 10118 10124 10152-10154 11476-11478 11484 11486 11508 11520 11522 11528 11530 11552 11856-11858 11864 11884 11956 11960-11961 11968-11970 21843 21873 21883 21959 21963 21988 21991 21997 21999 22360-22361 22363 22385 22485 22487 25559 25575 25579 25821-25823 25835 25837-25839 25841-25843 25885-25887 25901-25903 25905-25907 25921-25923 25985-25987 26135 26139 26151 26155 26157-26159 26161-26163 26877-26879 26903 26909-26911 26933 26941-26943 27021-27023 27025-27027 27041-27043 27197-27199 27213-27215 27217-27219 27233-27235 27277-27279 27281-27283 27297-27299 30975 31139 31148 31286 31289-31291 31309-31311 31315 31324-31325 31330-31331 31340 31342 31344-31345 31363 31488 31548 31550-31551 31594 31598-31599 31611 31700 31710 32391 32402-32403 32406-32407 32425-32427 32460 32462 32478 32484 32486 32492 32494-32495 32497 32499 32505 32672 32674 32678 32684 32686 40957 40959 45023 45039 45043https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/602/A100?format=asciiOpticaldefaultJ/A+A/602/A100/table1Catalog of galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGalID[1/584449] Unique galaxy identificationmeta.id;meta.mainintspecID? SDSS DR10 spectroscopic objectID (0=missing)meta.idnullableobjIDSDSS DR10 photometric objectIDmeta.idGroupID[0/88662] Group/cluster id (0=isolated galaxy)meta.idintNgal[1/254] Richness of group galaxy belongssrc.class.richnessintRank[1/254] Luminosity rank within its groupstat.correlationintDist.gComoving distance to group centre (G1)Mpcpos.distancedoublezobs[-0.01/0.21] Observed redshiftsrc.redshift;pos.heliocentricdoublezcmb[0/0.2] Redshift (CMB rest frame)src.redshiftdoublee_zobsUncertainty of the redshiftstat.errordoubleDistComoving distance (G1)Mpcpos.distancedoubleDistcorComoving distance, after suppressing the "finger-of-god" effect (G1)Mpcpos.distancedoubleRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleSGLONSupergalactic longitudedegpos.supergalactic.lonSGLATSupergalactic latitudedegpos.supergalactic.latdoublelambdaSDSS survey coordinate, {lambda}degpos.framedoubleetaSDSS survey coordinate, {eta}degpos.framedoubleXposCartesian x coordinate (G1)Mpcpos.cartesian.xdoubleYposCartesian y coordinate (G1)Mpcpos.cartesian.ydoubleZposCartesian z coordinate (G1)Mpcpos.cartesian.zdoubleumagExtinction corrected Petrosian u magnitudemagphot.mag;em.opt.UdoublegmagExtinction corrected Petrosian g magnitudemagphot.mag;em.opt.BdoublermagExtinction corrected Petrosian r magnitudemagphot.mag;em.opt.RdoubleimagExtinction corrected Petrosian i magnitudemagphot.mag;em.opt.IdoublezmagExtinction corrected Petrosian z magnitudemagphot.mag;em.opt.IdoubleuMAGAbsolute magnitude u-band, k+e-corrected (G1)magphys.magAbsdoublegMAGAbsolute magnitude g-band, k+e-corrected (G1)magphys.magAbsdoublerMAGAbsolute magnitude r-band, k+e-corrected (G1)magphys.magAbsdoubleiMAGAbsolute magnitude i-band, k+e-corrected (G1)magphys.magAbsdoublezMAGAbsolute magnitude z-band, k+e-corrected (G1)magphys.magAbsdoublek+e.uk+e-correction (u filter)magarith.factor;phot.magdoublek+e.gk+e-correction (g filter)magarith.factor;phot.magdoublek+e.rk+e-correction (r filter)magarith.factor;phot.magdoublek+e.ik+e-correction (i filter)magarith.factor;phot.magdoublek+e.zk+e-correction (z filter)magarith.factor;phot.magdoubleext.uGalactic extinction (u filter)magphys.absorptiondoubleext.gGalactic extinction (g filter)magphys.absorptiondoubleext.rGalactic extinction (r filter)magphys.absorptiondoubleext.iGalactic extinction (i filter)magphys.absorptiondoubleext.zGalactic extinction (z filter)magphys.absorptiondoubleLrObserved luminosity in the r-band (G1)1e+10solLumphys.luminositydoublew[1/9.1] Weight factor for the galaxy (1)phys.atmol.weightdoublepE[0/1] Probability of early-type (2)stat.fit.goodnessdoublepS0[0/1] Probability of S0 galaxystat.fit.goodnessdoublepSa[0/1] Probability of Sab galaxystat.fit.goodnessdoublepSc[0/1] Probability of Scd galaxystat.fit.goodnessdoubleDist.eDistance from survey mask border (G1)Mpcpos.distancedoubleDen1Environmental density at scale=1.5Mpc (G2)src.densitydoubleDen2Environmental density at scale=3Mpc (G2)src.densitydoubleDen4Environmental density at scale=6Mpc (G2)src.densitydoubleDen8Environmental density at scale=10Mpc (G2)src.densitydoubleSloanDisplay the online SDSS data for this galaxymeta.ref.urlcharJ/A+A/602/A100/table2Catalog of galaxy groupsNgal[2/254] Richnesssrc.class.richnessintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroupID[1/88662] Group/cluster IDmeta.id;meta.mainintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedlambdaSDSS survey coordinate, {lambda}degpos.framedoubleetaSDSS survey coordinate, {eta}degpos.framedoubleXposCartesian x coordinate (G1)Mpcpos.cartesian.xdoubleYposCartesian y coordinate (G1)Mpcpos.cartesian.ydoubleZposCartesian z coordinate (G1)Mpcpos.cartesian.zdoublezcmb[0/0.2] Redshift (CMB rest frame)src.redshiftdoubleDist.cComoving distance to group center (G1)Mpcpos.distancedoublesig.vrms radial velocity deviation {sigma}_V_km/sphys.veloc.dispersiondoublesig.skyrms deviation of the distance in plane of sky from group center {sigma}_sky_ (G1)Mpcstat.errordoubleRmaxMaximum radius of the group (G1)Mpcphys.size.radius;stat.maxdoubleM200Estimated mass of the NFW profile group1e+12solMassphys.massdoubleR200Radius, where mean density is 200 the Universe average densityMpcphys.size.radiusdoubleLrgroupObserved luminosity (G1)1e+10solLumphys.luminositydoublew[1/9.1] Weight factor for the groupphys.atmol.weightdoubleDen1Environment density: 1.5Mpc (G2)src.densitydoubleDen2Environment density: 3Mpc (G2)src.densitydoubleDen4Environment density: 6Mpc (G2)src.densitydoubleDen8Environment density: 10Mpc (G2)src.densitydoubleDnearestClDistance to the nearest clusterMpcpos.distancedoubleIDnearestClID of the nearest clustermeta.id.parentintIDmergerID of the group in merger catalogmeta.id.parentintJ/A+A/602/A100/table3Catalog of merging systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDMerging system IDmeta.id;pos.frameintNNumber of mergers in the systemmeta.numberintIDgr1The 1st ID of the merging groupmeta.idintIDgr2The 2nd ID of the merging groupmeta.idintIDgr3The 3rd ID of the merging groupmeta.idintIDgr4The 4th ID of the merging groupmeta.idintIDgr5The 5th ID of the merging groupmeta.idintIDgr6The 6th ID of the merging groupmeta.idint