J/A+A/479/927ivo://CDS.VizieR/J/A+A/479/927doi:10.26093/cds/vizier.34790927CDSTago E.Einasto J.Saar E.Tempel E.Einasto M.Vennik J.Muelle V.2017-07-03T14:25:45Z2008-07-09T12:13:12ZCDS support team

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

cds-question@unistra.frgalaxiescatalogsgalaxy-clustersphotometryWe extract groups of galaxies from the SDSS Data Release 5 to study the supercluster-void network and environmental properties of groups therein. Groups of galaxies as density enhancements can be used to determine the luminosity density field of the supercluster-void network. We use a modified friends-of-friends (FoF) method with slightly variable linking lengths in transverse and radial directions to eliminate selection effects and to reliably find as many groups as possible. To determine the scaling of the linking length we calibrated group sizes and mean galaxy number densities within groups by shifting nearby groups to larger distances. Our final sample contains 17143 groups in the equatorial (E), and 33219 groups in the northern (N) part of the DR5 survey. The mean sizes and velocity dispersions of our groups practically do not change with their distance. This means that the selection effects have been properly taken into account when generating the group catalogue.2008A&A...479..927Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/479/927CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AN/327/365 : Clusters and groups of galaxies in 2dF (Tago+, 2006)http://www.sdss.org : SDSS Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/479/927https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/479/927http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/479/927https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/479/927https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/479/927http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/479/927GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/479/927/groups (Groups of galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/479/927/groups?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/479/927/groups?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/479/927/groups?GETtext/xml+votable180.050000true146.57634-0.8320920.005555555555555556Cone search capability for table J/A+A/479/927/galaxies (Galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/479/927/galaxies?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/479/927/galaxies?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/479/927/galaxies?GETtext/xml+votable180.050000true146.628571-0.7651480.0055555555555555562/22-23 25 38 43 3/64 75 77-79 83 85-87 112-113 116 146-147 165-167 170-171 176-178 184 407 409-410 421 423 427-428 430 432-434 447 4/260-262 264 295 297 299 306-307 327 330-331 338-339 389-391 399 456-458 469 512 514 523 565 567 571 573-578 580 582-583 600 602 624 657-659 674 677-679 716 718 740 744-746 1373 1599 1621-1623 1625-1627 1644-1645 1648 1650 1690-1691 1701-1703 1707 1717-1719 1724 1740-1742 1746 1760-1761 1787 1962 2027 5/1052 1060-1061 1064 1088-1090 1092 1150-1151 1167 1178-1179 1184-1185 1187 1193 1222-1223 1302-1303 1305 1307 1318-1319 1344-1345 1347 1349-1351 1540-1541 1549 1552-1553 1555 1585 1588-1589 1685 1728-1729 1732-1733 1836 1838 1840-1842 1844-1845 1873 1875 1880-1882 1884 1888-1889 2052 2080-2082 2086-2090 2098 2130 2141 2143 2165 2167 2173 2175 2179-2180 2184 2207 2228-2229 2265 2267 2279 2289-2291 2316 2318-2319 2325 2327 2368 2370 2376 2378 2504-2506 2530 2536 2575-2576 2578 2584 2586 2590 2596-2597 2600-2601 2606 2608-2610 2613 2621-2623 2625 2627 2690-2692 2702-2703 2706-2707 2868 2870 2876 2878 2968-2970 2988 5461-5463 5469 5471 5491 5500-5502 6391 6395 6461-6463 6477-6479 6481-6483 6497-6499 6535 6541-6543 6584-6585 6587-6588 6590 6596-6598 6619-6622 6624 6637-6639 6641-6642 6648 6650 6735 6757-6759 6821-6823 6825-6827 6864-6866 6900-6902 6904 6972 6977-6982 6988 6992 7008 7048-7050 7056 7127 7133-7135 7143 7147 7786 7823 7827 7829-7831 7833-7834 7838 7841-7846 7854-7856 7859-7861 7863-7864 7868-7869 7886 7905-7907 7912 7914 7924 8099 8102-8103 8105 8107 8114 8120 8122 8125 8127 11261-11263 6/4212-4214 4216-4217 4248-4250 4252 4260-4261 4288-4290 4364-4366 4372 4384 4590-4591 4598-4599 4651 4654-4655 4665-4667 4707 4710-4711 4744-4745 4747 4769 4780-4781 4783 4874-4875 4877-4879 4883 4886-4887 5199 5203 5205-5207 5217-5219 5224-5225 5227 5262-5263 5269-5271 5384-5385 5387 5393-5395 6149 6168-6169 6172-6173 6205 6207 6216-6217 6337 6339 6363 6365-6367 6739 6976-6977 6980-6981 6992-6993 6996-6997 7348 7350 7372-7374 7384-7385 7388-7389 7488-7490 7496 7498-7499 7532-7533 7540 7568-7570 7572-7573 7680-7681 7684-7685 7696 8212-8214 8216-8218 8250 8332 8335 8343 8364-8365 8367 8386-8387 8396 8416-8418 8424 8471 8477 8479 8514-8515 8524 8526 8544-8545 8563 8569 8571 8657-8659 8665 8689 8691 8697-8699 8707 8709-8711 8713-8715 8724 8728-8730 8740-8742 8745 8748 8825 8827 8895 8903 8909 8920-8921 8923-8924 8938-8939 9002 9037 9039 9067 9088 9113 9115 9133 9135 9153-9155 9268 9270-9271 9306-9307 9486 9508 9510 9516 9518-9519 9530 9616 9618 9624-9626 9648 9650 9656 9658 10000 10028 10030 10112-10114 10116 10124 10152-10154 10261-10263 10269 10271 10293-10295 10297-10299 10318 10340 10342-10343 10349-10351 10354-10355 10359 10364-10365 10367 10379 10382-10383 10392-10393 10396-10397 10399 10409 10412 10415 10421 10428 10430-10431 10444-10446 10448 10450 10462-10465 10479 10481 10483 10505-10507 10757 10772 10783 10802-10803 10805-10807 10821-10823 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 22012-22013 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 26344-26345 26347 26356 26366 26396-26398 26416-26418 26432-26434 26437 26448-26449 26459 26462-26463 26471 26475 26492 26494 26504 26525-26527 26541-26543 26545-26547 26561-26563 26572-26574 26576-26578 26596 26598-26599 26604-26606 26871 26877-26879 26903 26909-26911 26933 26935 27015 27019 27021-27023 27025-27027 27197-27199 27213-27215 27277-27279 27281-27283 27297-27299 27468-27470 27612 27620-27622 27624-27625 27892 27896 27905-27907 27932-27934 27956 27960 27976 28036 28040 28204-28206 28208-28210 28228 28232 28288-28289 28523 28526-28527 28529 28567 28571 28583 28586-28587 30973-30975 31138-31139 31148 31150 31286 31289-31291 31303 31307 31313-31315 31329-31331 31340-31342 31344-31346 31358-31359 31363 31388-31390 31408-31410 31413-31415 31429-31431 31433-31435 31448-31449 31451 31460-31461 31463-31466 31480-31481 31485 31488-31490 31530 31533 31535 31611 31616 31618-31619 31632-31634 31640 31652-31654 31685 31687 31700 31704-31705 32391 32402-32403 32406-32407 32425-32427 32460 32462 32478 32484 32486 32492 32494-32495 32497 32499 32505 32672 32674 32680 32682-32683 40957 40959 45023 45039 450435.199768338881789e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/479/927?format=asciiOpticaldefaultJ/A+A/479/927/groupsGroups of galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFSimbad column added by the CDSobs.fieldcharGroupGroup identification numbermeta.id;meta.mainintindexedNgalRichness (number of member galaxies)src.class.richnessintRAJ2000Right 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.mainDistComoving distance (mean of member galaxies corrected for CMB), in Mpc/hMpcpos.distancefloatSizeMaximum projected linear size, in Mpc/hMpcphys.sizefloatsigmarms radial velocity (velocity dispersion)km/sstat.stdev;spect.dopplerVelocfloatRvirVirial radius (projected harmonic mean), in Mpc/hMpcphys.size.radiusfloatLmainLuminosity of main galaxy (1)1e+10solLumphys.luminosityfloatLgrObsObserved total group luminosity (1)1e+10solLumphys.luminosityfloatLgrEstEstimated total group luminosity (1)1e+10solLumphys.luminosityfloatJ/A+A/479/927/galaxiesGalaxiesrmagr magnitudemagphot.mag;em.opt.Rfloatimagi magnitudemagphot.mag;em.opt.Ifloatzmagz magnitudemagphot.mag;em.opt.IfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFSimbad column added by the CDSobs.fieldcharGroupGroup identification numbermeta.id.parentintindexedNgalGroup richnesssrc.class.richnessintGalaxyGalaxy identification numbermeta.id;meta.mainintDistCo-moving distance corrected for CMBMpcpos.distancefloatSXSupergalactic X coordinate, in Mpc/hMpcpos.cartesian.x;pos.supergalacticfloatSYSupergalactic Y coordinate, in Mpc/hMpcpos.cartesian.y;pos.supergalacticfloatSZSupergalactic Z coordinate, in Mpc/hMpcpos.cartesian.z;pos.supergalacticfloatRAJ2000Right ascension in decimal degrees, J2000.0degpos.eq.ra;meta.mainindexedDEJ2000Declination in decimal degrees, J2000.0degpos.eq.dec;meta.mainindexedlambdaSDSS lambda coordinatedegpos.eqfloatetaSDSS eta coordinatedegpos.eqfloatumagSDSS u magnitudemagphot.mag;em.opt.Ufloatgmagg magnitudemagphot.mag;em.opt.BfloatKcorrK correction (+ evol) in r bandmagarith.factor;phot.magfloatrMAGAbsolute magnitude in r bandmagphys.magAbsfloatL(r)Luminosity in r band (in units of 10^10^L_{sun}_/h^2^)1e+10solLumphys.luminosityfloatSDSSDisplay the SDSS datameta.ref.urlchar