Main galaxy groups from SDSS-DR5 J/A+A/474/783 ivo://CDS.VizieR/J/A+A/474/783 doi:10.26093/cds/vizier.34740783 CDS Deng X.-F. He J.-Z. Jiang P. Luo C.-H. Wu P. 2007-12-30T11:10:23Z 2007-12-30T12:05:11Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr galaxy-clusters redshifted galaxy-kinematics We investigate the correlations between galaxy properties and environment. From the main galaxy sample of the SDSS Data Release 5, we have extracted 11 163 groups at the linking length R_0_=0.2x({bar}n)^-1/3^=1.97Mpc (where {bar}n is the mean number density of galaxies) by the three-dimensional friends-of-friends (FOF) algorithm, where {bar}n is the mean galaxy density, and compare basic properties of member galaxies of main galaxy groups with those of the main galaxy sample and isolated galaxies in each redshift bin. 2007A&A...474..783D https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/474/783 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to II/276 : The SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+, 2007) http://www.sdss.org : SDSS Home Page https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/474/783 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/474/783 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/474/783 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/474/783 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/474/783 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/474/783 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/474/783/table2 (The group catalog identified using the linking length b=0.2) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/474/783/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/474/783/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/474/783/table2? GET text/xml+votable 180.0 50000 true 146.68663 -0.73077 0.005555555555555556 4/334-335 657 687 5/1024 1032-1033 1039 1042-1043 1045 1047 1050 1064 1183 1188-1190 1199 1201 1205-1206 1211 1226 1230-1231 1235 1238-1239 1241 1244 1248-1250 1252-1254 1262-1263 1266-1268 1271-1274 1276 1278-1279 1332 1334-1335 1349 1351 1356-1358 1366-1367 1370 1374 1376 1378 1382-1384 1388 1390 1393 1397-1398 1403 1405-1407 1410-1412 1429 1440 1443 1463 1469 1472 1475 1477 1480 1482-1483 1485 1487 1493-1495 1497-1501 1506-1507 1512 1514-1515 1517 1519-1521 1523 1525 1527 1529 1553 1556 1559 1597 1599-1600 1605-1606 1608-1609 1611 1613-1615 1624 1631-1633 1637 1645 1649-1650 1653-1656 1661-1663 1685 1798-1799 1804 1807-1808 1810 1814 1816-1818 1827 1829 1835 1863 1866 1873 1877-1878 2051-2052 2080 2092-2093 2098 2165 2167 2175 2228 2263 2268-2269 2285 2291 2294 2300-2301 2305 2309 2311 2313 2316 2319 2322 2325 2329 2332-2333 2338-2342 2344 2346-2348 2355 2364 2366 2368 2370 2376 2401 2409 2434-2437 2440 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28664 28668 28670-28671 30033 30698 31061 31290-31292 31294-31295 31354-31355 31366 31369-31373 31375 31377-31382 31384-31385 31387-31389 31392 31394-31395 31401-31402 31404 31406-31408 31413 31415 31418-31419 31421-31424 31429 31435-31438 31441 31446-31447 31452-31453 31457-31458 31464 31476 31480 31546 31618 31631-31632 31649 31651 31656-31657 31697-31699 32397 32399 32402-32403 32406 32408 32411 32413 32415 32423 32428 32430 32432 32440-32441 32443 32445-32447 32456-32458 32460 32462 32484 32486 32488-32489 32491-32492 32494 32497 32501-32503 32508-32509 32511 32680 32682 36715 36718 36722 36725 36730 36732 36763-36766 36775 36779 36784-36785 36788 36805 36807-36810 36816 36861 36863 45039 45045-45047 45049 45051 48988-48990 49009-49010 49014-49017 49020 49084-49085 49097 49099-49100 49102-49104 49106 49112 49120 49124 49128 49149 49151 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/474/783?format=ascii Optical default J/A+A/474/783/table2 The group catalog identified using the linking length b=0.2 Seq Sequential number meta.record int z Mean redshift of the group src.redshift double recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Rich Group richness src.class.richness int RAJ2000 Group centroid Right ascension in decimal degrees (J2000) deg pos.eq.ra;meta.main DEJ2000 Group centroid Declination in decimal degrees (J2000) deg pos.eq.dec;meta.main sigma Line-of-sight velocity dispersion of the group km/s phys.veloc.dispersion;pos.lg float Rad Virial radius of the group Mpc phys.size.radius;pos.lg float Mass Virial mass of the group solMass phys.mass;pos.lg double tcr Crossing time of the group, in units of 1/H_0_ time.epoch;pos.lg float