J/MNRAS/490/135ivo://CDS.VizieR/J/MNRAS/490/135doi:10.26093/cds/vizier.74900135CDSLee S.-K.Im M.Hyun M.Park B.Kim J.-W.Kim D.Kim Y.2024-08-20T20:13:30Z2023-02-17T12:27:11ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesspectroscopyredshiftedvisible-astronomyHigh-redshift galaxy clusters, unlike local counterparts, show diverse star formation activities. However, it is still unclear what keeps some of the high-redshift clusters active in star formation. To address this issue, we performed a multiobject spectroscopic observation of 226 high-redshift (0.8<z<1.3) galaxies in galaxy cluster candidates and the areas surrounding them. Our spectroscopic observation reveals six to eight clusters/groups at z~0.9 and z~1.3. The redshift measurements demonstrate the reliability of our photometric redshift measurements, which in turn gives credibility for using photometric redshift members for the analysis of large-scale structures (LSSs). Our investigation of the large-scale environment (~10Mpc) surrounding each galaxy cluster reveals LSSs - structures up to ~10Mpc scale - around many of, but not all, the confirmed overdensities and the cluster candidates. We investigate the correlation between quiescent galaxy fraction of galaxy overdensities and their surrounding LSSs, with a larger sample of ~20 overdensities including photometrically selected overdensities at 0.6<z<0.9. Interestingly, galaxy overdensities embedded within these extended LSSs show a lower fraction of quiescent galaxies (~20 per cent) than isolated ones at similar redshifts (with a quiescent galaxy fraction of ~50 per cent). Furthermore, we find a possible indication that clusters/groups with a high quiescent galaxy fraction are more centrally concentrated. Based on these results, we suggest that LSSs are the main reservoirs of gas and star-forming galaxies to keep galaxy clusters fresh and extended in size at z~1.2019MNRAS.490..135Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/490/135CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/490/135https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/490/135http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/490/135https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/490/135https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/490/135http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/490/135GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/490/135/table2 (Target UDS galaxies for our magellan spectroscopic observation)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/490/135/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/490/135/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/490/135/table2?GETtext/xml+votable180.050000true34.6469-5.042290.005555555555555556Cone search capability for table J/MNRAS/490/135/table3 (Properties of galaxy clusters/groups)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/490/135/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/490/135/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/490/135/table3?GETtext/xml+votable180.050000true34.84044-4.884810.0055555555555555566/176902.680029793928555e-19 3.372513698651875e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/490/135?format=asciiOpticaldefaultJ/MNRAS/490/135/table2Target UDS galaxies for our magellan spectroscopic observationSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy name (UDS-NNNNNN) (1)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainzspec? Spectroscopic redshiftsrc.redshift;pos.heliocentricfloatnullableq_zspecQuality flag on zspec (2)meta.code.qualcharzphot? Photometric redshiftsrc.redshiftfloatnullableRmagSubaru R-band magnitudemagphot.mag;em.opt.Rfloatf_Rmag[a] Flag on Rmag (3)meta.codecharGroupCluster/group membership (4)meta.id.parentcharJ/MNRAS/490/135/table3Properties of galaxy clusters/groupszclCluster redshiftsrc.redshift;pos.heliocentricfloatSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster/Group Name (UDSODN-a)meta.id;meta.maincharf_Name[b] Flag on Name (1)meta.codecharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.maine_zclError on zclstat.errorfloatRprojProjected radiusMpcphys.size.radiusfloatNspNumber of galaxies with spectroscopic redshift within the projected radius Rprojmeta.numberintNsplit? Total number of galaxies with zspec within the projected radius Rproj including the spectroscopic redshifts from literaturemeta.numberintnullablewi? Weight computed as the number of spectroscopically confirmed members divided by the sum of the numbers of spectroscopic members and outliersstat.weightfloatnullablelogM*? Logarithm of total stellar masslog(solMass)phys.massfloatnullablelogM200? Logarithm of halo mass calibrated from the correlation between total stellar mass and halo mass of model clusters (see Appendix B)log(solMass)phys.massfloatnullablee_logM200? Error on logM200log(solMass)stat.errorfloatnullableNg? Number of member galaxies corrected by applying weights for photo-z selected membersmeta.numberintnullableFquies? Quiescent galaxy fraction within R200stat.fit.paramfloatnullableR200? Halo radius calculated from M200kpcphys.size.radius;meta.modelledintnullableConc? Halo concentrationmeta.notefloatnullable