J/MNRAS/412/2498ivo://CDS.VizieR/J/MNRAS/412/2498doi:10.26093/cds/vizier.74122498CDSMakarov D.Karachentsev I.2024-07-13T20:15:00Z2014-12-08T09:31:49ZCDS support team

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

cds-question@unistra.frgalaxiesgalaxy-clustersWe present an all-sky catalogue of 395 nearby galaxy groups revealed in the Local Supercluster and its surroundings. The groups and their associations are identified among 10914 galaxies at |b|>15{deg} with radial velocities V_LG_<3500km/s. Our group-finding algorithm requires the group members to be located inside their zero-velocity surface. Hereby, we assume that individual galaxy masses are proportional to their total K-band luminosities, M/L_K_=6M_{sun}_/L_{sun}_. The sample of our groups, where each group has n>=4 members, is characterized by the following medians: mean projected radius <R>=268kpc, radial velocity dispersion {sigma}_V_=74km/s, K-band luminosity L_K_=1.2x10^11^L_{sun}_, virial and projected masses M_vir_=2.4x10^12^ and M_p_=3.3x10^12^M_{sun}_, respectively. Accounting for measurement error reduces the median masses by 30 per cent. For 97 per cent of identified groups the crossing time does not exceed the cosmic time, 13.7Gyr, with the median at 3.8Gyr. We examine different properties of the groups, in particular of the known nearby groups and clusters in Virgo and Fornax. About a quarter of our groups can be classified as fossil groups where the dominant galaxy is at least 10 times brighter than the other group members.2011MNRAS.412.2498Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/412/2498CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/743/123 : Coma I cloud fast motions of galaxies (Karachentsev+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/412/2498https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/412/2498http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/412/2498https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/412/2498https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/412/2498http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/412/2498GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/412/2498/table1 (The main properties of the groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/412/2498/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/412/2498/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/412/2498/table1?GETtext/xml+votable180.050000true0.81208316.1455560.0055555555555555566/14 664 700 2121 2409 2856 4038 4149 4167 4181 4188 4212 4328 4439 4447 4511 4806-4807 4829 4870 4891 4989 5021 5028 5082 5182 5196 5202 5244 5429 5560 5587 5594 5610 5613 5631 5634 5793 5799 5989 6003 6012 6014 6087 6090 6093 6098-6099 6103 6129 6138 7036 7177 7225 7241 7265 7287 7385 7424 7442 7479 7523 7550 7606 7659 7896 7980 7986 8085 8173 8196 8225 8235 8328 8506 8729 9052 9882 10220 10523 10544 10612 10628 10637 10650 10671 10674 10719 10727 10739 10761 10817 10856 10888 10905 10912 10924 10977 10979-10980 11000 11010 11026-11027 11132 11196 11207 11253 11263 11327 11375 11389 11392 11398 11434-11435 11446 11450 11738 11776 11791 11800 11824 11832 11938 11944 11947 11951 11965 12005 12018-12019 12025 13522 16453 16655 16898 17286 17472 17486 17492 17612 17754 17761 17777 17905 18011 18214 18325 18387 18398 18458 18800 19611 19697 20008 20101 20601 20693 20875 21065 21087 21106 21198 22613 22620 22740 23157 24584 24598 24681 24733 24839 24897 24920 24949 24951 25044 25046 25083 25100 25238 25344 25513 25599 25603 25647 25739 25769-25770 25779 25890 25907 25972 26065 26072 26091 26125 26148 26157 26173 26175 26210 26234 26303 26307 26313 26323 26336 26472 26528 26551 26758 26803 27079 27186 27243 27255 27285 27331 27345 27367 27377 27515 27562 27595 27603-27604 27608 27653 27714 27718-27719 27723 27728 27741 27773 27806 27828 27857 27861 27874 27926 27936 27945 28035 28141 28167 28221 28225 28228 28234 28237 28264 28463 28476 28517 28522 28524 28612 28616 31291 31998 32426 32550 33176 33802 33954 34273 34343 34404 34493 34534 34694 35325 35365 35499 35514 35746 35966 35993 36081 36107 36152 36211 36231 36247 36450 36632 36734 36773 37429 37559 38268 38347 38350 38356 38655 38671 38675 38701 38704 38723 38814 38817 38836 38842 38853 38868 38877 38902 38906 38985 40025 40192 40252 40274 40373 40410 40777 40952 41052 42923 43259 43262 43339 43585 43602 43619 43621 43626 43662 43697 43748 43767 43787 43824 43867 43876 43881 43920 43941 43955 43978 44026 44247 44267 44613 44629 44635-44636 44812 44849 44896 44955 44995 45054 45421 45469 45487 45545 45611 45748 45883 46036 46389 46399 46477 46513 46566 46568 46608 46615 46618 46689 46723 46882 46987 47178 47201 47253 47386 47456 47574 48270 48464 48484 48665 48745https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/412/2498?format=asciidefaultJ/MNRAS/412/2498/table1The main properties of the groupsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroupPrincipal name of the group's brightest galaxy, taken, as a rule, from LEDAmeta.id;meta.maincharRAJ2000Right ascension of group's main member (J2000)pos.eq.ra;meta.mainDEJ2000Declination of the group's main member (J2000)pos.eq.dec;meta.mainN[4/355] Number of group members with known radial velocitiesmeta.idintVLGMean radial velocity of the group relative to the centroid of the Local Groupkm/sspect.dopplerVeloc;stat.meanintsigVStandard deviation of radial velocities of the group members {sigma}_V_ not corrected for the velocity measurement errorskm/sphys.veloc.dispersionintRhMean harmonic radius of the group (1)kpcphys.size.radius;stat.meanintlogLKTotal luminosity of the group in the Ks band (2)log(solLum)phys.luminosity;em.IRfloatlogMProjected mass of the group, as defined by Heisler et al. (1985ApJ...298....8H)log(solMass)phys.mass;pos.lgfloatlogM/L[0/3] projected mass-to-total luminosity ratio in the K bandlog(Sun)phys.luminosity;em.IR.K;arith.ratiofloatT[-5/2] Morphological type of the group's main member according to the RC2 classification (de Vaucouleurs et al., 1976RC2...C......0D)src.morph.type;meta.mainintDm21Difference in apparent K magnitudes of the first and second members of the group, ranked by K-luminosity m_K_(2)-m_K_magstat.fit.paramfloatAssocGroup's membership in an association (3)meta.id.parentcharNgNumber of groups in this associationmeta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlcharLEDASimbad column added by the CDSmeta.ref.urlchar