J/A+A/507/671ivo://CDS.VizieR/J/A+A/507/671doi:10.26093/cds/vizier.35070671CDSTanaka M.Lidman C.Bower R.G.Demarco R.Finoguenov A.Kodama T.,Nakata F.Rosati P.2010-04-24T11:13:39Z2010-04-04T14:24:01ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedgalaxiesphotometryRecent wide-field imaging observations of the X-ray luminous cluster RDCS J1252.9-2927 at z=1.24 uncovered several galaxy groups that appear to be embedded in filamentary structure extending from the cluster core. We make a spectroscopic study of the galaxies in these groups using GMOS on Gemini-South and FORS2 on VLT with the aim of determining if these galaxies are physically associated to the cluster. We find that three groups contain galaxies at the cluster redshift and that they are probably bound to the cluster. This is the first confirmation of filamentary structure as traced by galaxy groups at z>1. We then use several spectral features in the FORS2 spectra to determine the star formation histories of group galaxies.2009A&A...507..671Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/507/671CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/507/671https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/507/671http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/507/671https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/507/671https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/507/671http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/507/671GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/507/671/table2 (The GMOS and FORS2 spectroscopic catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/507/671/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/507/671/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/507/671/table2?GETtext/xml+votable180.050000true193.3192917-29.28655560.0055555555555555566/43945 43947-43948 43950https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/507/671?format=asciiOpticaldefaultJ/A+A/507/671/table2The GMOS and FORS2 spectroscopic cataloge_Rmag? rms uncertainty on Rmagmagstat.error;phot.mag;em.opt.RfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName, GMS-FN-NNA or FORS2-FN-NNAmeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainzRedshiftsrc.redshiftfloatE_zError on Redshift (upper limit) (1)stat.error;stat.maxfloate_zError on Redshift (lower limit) (1)stat.error;src.redshiftfloatq_z[0/1] 0=secure redshift, 1=possible redshiftmeta.code.qual;src.redshiftintVmag? Total V magnitude (on AB system) (3)magphot.mag;em.opt.Vfloatnullablee_Vmag? rms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatnullableRmag? Total R magnitude (on AB system) (3)magphot.mag;em.opt.Rfloatnullableimag? Total i magnitude (on AB system) (3)magphot.mag;em.opt.Ifloatnullablee_imag? rms uncertainty on imagmagstat.error;phot.mag;em.opt.Ifloatnullablezmag? Total z magnitude (on AB system) (3)magphot.mag;em.opt.Ifloatnullablee_zmag? rms uncertainty on zmagmagstat.error;phot.mag;em.opt.IfloatnullableKmag? Total K magnitude (on AB system) (3)magphot.mag;em.IR.Kfloatnullablee_Kmag? rms uncertainty on Kmagmagstat.error;phot.mag;em.IR.Kfloatnullable