J/AJ/125/1660ivo://CDS.VizieR/J/AJ/125/1660doi:10.26093/cds/vizier.51251660CDSIovino A.de Carvalho R.R.Gal R.R.Odewahn S.C.Lopes P.A.A.,Mahabal A.Djorgovski S.G.2023-04-06T16:50:54Z2003-11-14T09:19:18ZCDS support team

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

cds-question@unistra.frsurveysgalaxy-clustersphotometryWe have identified 84 small, high-density groups of galaxies out to z~0.2 in a region of 2000deg^2^ around the north Galactic pole using the digitized Second Palomar Observatory Sky Survey. The groups have at least four galaxies satisfying more stringent criteria than those used by Hickson in his pioneering work in 1982: the adopted limiting surface brightness for each group is brighter (24mag/arcsec^2^ instead of 26mag/arcsec^2^), and the spread in magnitude among the member galaxies is narrower (2mag instead of 3). We also adopt a slightly modified version of the isolation criterion used by Hickson, in order to avoid rejecting groups with projected nearby faint background galaxies. A 10% contamination rate due to projection effects is expected for this sample based on extensive simulations.2003AJ....125.1660Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/125/1660CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/125/1660https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/125/1660http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/125/1660https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/125/1660https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/125/1660http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/125/1660GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/125/1660/table1 (Characteristic parameters of the groups in our sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/125/1660/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/125/1660/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/125/1660/table1?GETtext/xml+votable180.050000true138.5791754.322780.005555555555555556Cone search capability for table J/AJ/125/1660/table2 (Catalog of group member galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/125/1660/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/125/1660/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/125/1660/table2?GETtext/xml+votable180.050000true138.585416754.32228060.0055555555555555566/4443 4453 5127 5189 5207 5216-5217 5334 5340 5401 5442 5448 5481-5482 5484 5521 5524 5536 5876 5894 5936 5938 7273 7425 7434 8695 8959 9015 9019 9037 9050 9056 9072 9174 9179 9296 9330 9360 9393 9504 9512 9515 9520 9534 9568 9622 9735 9791 9883 9927 9930 9963 9975 10151 10156 10399 10521 10795 10899 10944 27839 27859 27869 27880 27969 28004 28075 28095 28233 28271 28276 28311 28321 28345 28380 28422 28432 28453 28481 28485 28571 28592 28595 286012.85864675833786e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/125/1660?format=asciiOpticaldefaultJ/AJ/125/1660/table1Characteristic parameters of the groups in our sampleNmembNumber of group members (6)meta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPCGGroup name (JHHMM+DDMM)meta.id;meta.maincharprimaryRAJ2000Hour of right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000) (1)pos.eq.dec;meta.mainRadGroup radius (2)arcminphys.angSize;srcfloatrmagBrightest group galaxy r-band magnitudemagphot.mag;em.opt.RfloatSBMean r-band group surface brightness (3)mag.arcsec**-2phot.mag.sbfloatDmagMagnitude interval between the brightest and the faintest group member (4)magstatfloatDmag1Magnitude interval between the brightest group member and the brightest interloper in the isolation ring (5)magstatfloatJ/AJ/125/1660/table2Catalog of group member galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPCGGroup name (JHHMM+DDMM)meta.id.part;meta.maincharMemMember galaxy (1)meta.id.part;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainrmagThe SDSS r-band magnitudemagphot.mag;em.opt.Rfloatg-rThe SDSS (g-r) colormagphot.color;em.opt.V;em.opt.RfloatPosAngPosition angledegpos.posAngintEllipEllipticitysrc.ellipticityfloat