J/A+A/583/A124ivo://CDS.VizieR/J/A+A/583/A124doi:10.26093/cds/vizier.35830124CDSDurret F.Wakamatsu K.-I.Nagayama T.Adami C.Biviano A.2017-10-05T08:16:38Z2015-11-04T09:25:12ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryredshiftedThe Ophiuchus cluster, at a redshift z=0.0296, is known from X-rays to be one of the most massive nearby clusters, but due to its very low Galactic latitude its optical properties have not been investigated in detail. Aims. We discuss the optical properties of the galaxies in the Ophiuchus cluster, in particular with the aim of understanding better its dynamical properties. We have obtained deep optical imaging in several bands with various telescopes, and applied a sophisticated method to model and subtract the contributions of stars in order to measure galaxy magnitudes as accurately as possible. The colour-magnitude relations obtained show that there are hardly any blue galaxies in Ophiuchus (at least brighter than r'<=19.5), and this is confirmed by the fact that we only detect two galaxies in H{alpha}. We also obtained a number of spectra with ESO-FORS2, that we combined with previously available redshifts. Altogether, we have 152 galaxies with spectroscopic redshifts in the 0.02<=z<=0.04 range, and 89 galaxies with both a redshift within the cluster redshift range and a measured r' band magnitude (limited to the Megacam 1x1deg^2^ field).2015A&A...583A.124Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/583/A124CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/583/A124https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/583/A124http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/583/A124https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/583/A124https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/583/A124http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/583/A124GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/583/A124/tablea1 (Photometric catalogue in the r', g' and z' bands in the central region covered by the FORS2 z' band image)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/583/A124/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/583/A124/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/583/A124/tablea1?GETtext/xml+votable180.050000true258.02116-23.342530.005555555555555556Cone search capability for table J/A+A/583/A124/tablea2 (r band photometric catalogue for the objects with a measured spectroscopic redshift but outside the VLT/FORS2 area)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/583/A124/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/583/A124/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/583/A124/tablea2?GETtext/xml+votable180.050000true257.56158-23.567840.005555555555555556Cone search capability for table J/A+A/583/A124/tablea3 (Spectroscopic redshift catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/583/A124/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/583/A124/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/583/A124/tablea3?GETtext/xml+votable180.050000true256.823625-24.11086110.0055555555555555565/7308 6/29221 29223 29229 29240-29241https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/583/A124?format=asciiOpticaldefaultJ/A+A/583/A124/tablea1Photometric catalogue in the r', g' and z' bands in the central region covered by the FORS2 z' band imageSeqRunning numbermeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_Seq[*] *: have a spectroscopic redshift given in tablea3.datmeta.notecharOPHObject OPH name (JHHMMSS.ss+DDMMSS)meta.id;meta.maincharRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainr'magr' band magnitudemagphot.mag;em.opt.Rfloatu_r'mag[: ] Uncertainty flag on r'mag (1)meta.code.errorcharg'mag? g' band magnitudemagphot.mag;em.opt.Bfloatnullableu_g'mag[: ] Uncertainty flag on g'mag (1)meta.code.errorcharz'mag? z' band magnitudemagphot.mag;em.opt.Ifloatnullableu_z'mag[: ] Uncertainty flag on z'magmeta.code.errorcharQual[1/3]? Quality of the galaxy classification (2)src.class.starGalaxyintnullableCode[1/3]? poor photometric condition code (3)meta.codecharNotesOther identifications and commentsmeta.notecharJ/A+A/583/A124/tablea2r band photometric catalogue for the objects with a measured spectroscopic redshift but outside the VLT/FORS2 arearecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.idintOPHObject OPH name (JHHMMSS.ss+DDMMSS)meta.id;meta.maincharRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainr'magr' band magnitudemagphot.mag;em.opt.RfloatONameOther identificationmeta.idcharJ/A+A/583/A124/tablea3Spectroscopic redshift catalogueSimbadNameSimbad column added by the CDSmeta.idcharNameObject namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.idintn_Seq[*] *: photometric data are given in tablea1.dat (VLT/FORS2 area) and tablea2.dat (outside the VLT/FORS2 area)meta.notecharzspSpectroscopic redshiftsrc.redshiftfloatr_zsp[1/3] Reference to the origin of the redshift (1)meta.ref;pos.frameintOPHObject OPH name (JHHMMSS.ss+DDMMSS)meta.idchar_RAPositions from Simbad or Name (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad or Name (declination part)degpos.eq.dec;meta.main