J/MNRAS/423/3652ivo://CDS.VizieR/J/MNRAS/423/3652doi:10.26093/cds/vizier.74233652CDSGrutzbauch R.Bauer A.E.Jorgensen I.Varela J.2024-07-18T20:18:27Z2018-12-12T12:37:56ZCDS support team

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

cds-question@unistra.frgalaxy-clustersinfrared-photometryvisible-astronomyh-alpha-photometryWe present the results of an extended narrow-band H{alpha} study of the massive galaxy cluster XMMU J2235.3-2557 at z=1.39. This paper represents a follow-up study to our previous investigation of star formation in the cluster centre, extending our analysis out to a projected cluster radius of 1.5Mpc. Using the Near InfraRed Imager and Spectrograph on Gemini North Telescope we obtained deep H narrow-band imaging corresponding to the rest-frame wavelength of H{alpha} at the cluster's redshift. We identify a total of 163 potential cluster members in both pointings, excluding stars based on their near-infrared colours derived from VLT/HAWK-I imaging. Of these 163 objects 14 are spectroscopically confirmed cluster members, and 20 per cent are excess line emitters. We find no evidence of star formation activity within a radius of 200 kpc of the brightest cluster galaxy in the cluster core. Dust-corrected star formation rates (SFRs) of excess emitters outside this cluster quenching radius, R_Q_~200kpc, are on average <SFR>=2.7+/-1.0M_{sun}_/yr, but do not show evidence of increasing SFRs towards the extreme 1.5Mpc radius of the cluster. No individual cluster galaxy exceeds an SFR of 6M_{sun}_/yr. Massive galaxies (logM*/M_{sun}_>10.75) all have low specific SFRs (SSFRs, i.e. SFR per unit stellar mass). At fixed stellar mass, galaxies in the cluster centre have lower SSFRs than the rest of the cluster galaxies, which in turn have lower SSFRs than field galaxies at the same redshift by a factor of a few to 10. For the first time we can demonstrate through measurements of individual SFRs that already at very early epochs (at an age of the Universe of ~4.5Gyr) the suppression of star formation is an effect of the cluster environment which persists at fixed galaxy stellar mass.2012MNRAS.423.3652Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/423/3652CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/411/2009 : H narrow-band imaging of XMMU J2235.3-2557 (Bauer+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/423/3652https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/423/3652http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/423/3652https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/423/3652https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/423/3652http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/423/3652GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/423/3652/table1 (Properties of detected objects in both pointings, cluster centre and outskirts.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/423/3652/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/423/3652/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/423/3652/table1?GETtext/xml+votable180.050000true338.836667-25.9611110.005555555555555556Cone search capability for table J/MNRAS/423/3652/table2 (Properties of objects excluded from the sample due to (J-K) colour, K-band magnitude or CLASS_STAR parameter)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/423/3652/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/423/3652/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/423/3652/table2?GETtext/xml+votable180.050000true338.84-25.9636110.0055555555555555566/470531.1117888732206297e-19 1.3213833858313153e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/423/3652?format=asciiOpticalInfrareddefaultJ/MNRAS/423/3652/table1Properties of detected objects in both pointings, cluster centre and outskirts.DistBGC distancekpcpos.distanceintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/200] Identification numbermeta.id;meta.mainintn_ID[*] * for spectroscopically confirmed membersmeta.notecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainHbmagAperture H broad-band (1.65um) magnitudemagphot.mag;em.IR.Hfloate_Hbmagrms uncertainty on Hbmagmagstat.error;phot.mag;em.IR.HfloatHnmagAperture H narrow-band (1.57um) magnitudemagphot.mag;em.IR.Hfloate_Hnmagrms uncertainty on Hnmagmagstat.error;phot.mag;em.IR.HfloatSFR? Star formation ratesolMass/yrphys.SFRfloatnullablee_SFR? rms uncertainty on SFRsolMass/yrstat.error;phys.SFRfloatnullableJ-KAperture J-K colour indexmagphot.color;em.IR.J;em.IR.Kfloate_J-Krms uncertainty on J-Kmagstat.error;phot.color;em.IR.JfloatExcessExcess flux in the narrow-band image relative to the broad-band observations, {SIGMA}phot.flux;arith.ratiofloatn_Excess[a] Note on Excess (1)meta.notecharJ/MNRAS/423/3652/table2Properties of objects excluded from the sample due to (J-K) colour, K-band magnitude or CLASS_STAR parameterrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[26/201] Identification numbermeta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainHbmagAperture H broad-band (1.65um) magnitudemagphot.mag;em.IR.Hfloate_Hbmagrms uncertainty on Hbmagmagstat.error;phot.mag;em.IR.HfloatHnmag? Aperture H narrow-band (1.57um) magnitudemagphot.mag;em.IR.Hfloatnullablee_Hnmagrms uncertainty on Hnmagmagstat.error;phot.mag;em.IR.HfloatJ-K? Aperture J-K colour indexmagphot.color;em.IR.J;em.IR.Kfloatnullablee_J-K? rms uncertainty on J-Kmagstat.error;phot.color;em.IR.JfloatnullableHClassCLAS_STAR parameter for H band (1)stat.fit.paramfloatKClassCLAS_STAR parameter for K band (1)stat.fit.paramfloat