J/MNRAS/449/4010ivo://CDS.VizieR/J/MNRAS/449/4010doi:10.26093/cds/vizier.74494010CDSKirk B.Hilton M.Cress C.Crawford S.M.Hughes J.P.Battaglia N.,Bond J.R.Burke C.Gralla M.B.Hajian A.Hasselfield M.Hincks A.D.,Infante L.Kosowsky A.Marriage T.A.Menanteau F.Moodley K.,Niemack M.D.Sievers J.L.Sifon C.Wilson S.Wollack E.J.Zunckel C.2024-08-14T20:21:21Z2016-01-21T15:46:51ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryredshiftedWe present Southern African Large Telescope follow-up observations of seven massive clusters detected by the Atacama Cosmology Telescope (ACT) on the celestial equator using the Sunyaev-Zel'dovich (SZ) effect. We conducted multi-object spectroscopic observations with the Robert Stobie Spectrograph in order to measure galaxy redshifts in each cluster field, determine the cluster line-of-sight velocity dispersions, and infer the cluster dynamical masses. We find that the clusters, which span the redshift range 0.3<z<0.55, range in mass from (5-20)x10^14^M_{sun}_ (M_200c_). Their masses, given their SZ signals, are similar to those of Southern hemisphere ACT clusters previously observed using Gemini and the VLT. We note that the brightest cluster galaxy in one of the systems studied, ACT-CL J0320.4+0032 at z=0.38, hosts a type II quasar. Only a handful of such systems are currently known, and therefore ACT-CL J0320.4+0032 may be a rare example of a very massive halo in which quasar-mode feedback is actively taking place.2015MNRAS.449.4010Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/4010CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/4010https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/449/4010http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/449/4010https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/449/4010https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/449/4010http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/449/4010GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/449/4010/table2 (Spectroscopic redshifts of galaxies in the direction of ACT-CL J0320.4+0032 measured using SALT RSS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/4010/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/4010/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/4010/table2?GETtext/xml+votable180.050000true50.124116670.531555560.005555555555555556Cone search capability for table J/MNRAS/449/4010/tablea1 (Spectroscopic redshifts of galaxies in the direction of ACT-CL J0045.2-0152 measured using SALT RSS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/4010/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/4010/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/4010/tablea1?GETtext/xml+votable180.050000true11.30207917-1.875458330.005555555555555556Cone search capability for table J/MNRAS/449/4010/tablea2 (Spectroscopic redshifts of galaxies in the direction of ACT-CL J0156.4-0123 measured using SALT RSS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/4010/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/4010/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/4010/tablea2?GETtext/xml+votable180.050000true29.1012375-1.388144440.005555555555555556Cone search capability for table J/MNRAS/449/4010/tablea3 (Spectroscopic redshifts of galaxies in the direction of ACT-CL J0219.9+0129 measured using SALT RSS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/4010/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/4010/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/4010/tablea3?GETtext/xml+votable180.050000true34.96731251.497830560.005555555555555556Cone search capability for table J/MNRAS/449/4010/tablea4 (Spectroscopic redshifts of galaxies in the direction of ACT-CL J0342.7-0017 measured using SALT RSS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/4010/tablea4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/4010/tablea4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/4010/tablea4?GETtext/xml+votable180.050000true55.6777125-0.285636110.005555555555555556Cone search capability for table J/MNRAS/449/4010/tablea5 (Spectroscopic redshifts of galaxies in the direction of ACT-CL J0348.6-0028 measured using SALT RSS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/4010/tablea5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/4010/tablea5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/4010/tablea5?GETtext/xml+votable180.050000true57.16477083-0.471361110.005555555555555556Cone search capability for table J/MNRAS/449/4010/tablea6 (Spectroscopic redshifts of galaxies in the direction of ACT-CL J2058.8+0123 measured using SALT RSS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/4010/tablea6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/4010/tablea6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/4010/tablea6?GETtext/xml+votable180.050000true314.736570831.379883330.0055555555555555566/12290-12291 17805 17860 17980 23144 23146 23189 232162.85864675833786e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/449/4010?format=asciiOpticaldefaultJ/MNRAS/449/4010/table2Spectroscopic redshifts of galaxies in the direction of ACT-CL J0320.4+0032 measured using SALT RSSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID numbermeta.id;meta.mainintMask[1234S] Mask number or S (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmagSDSS r magnitudemagphot.mag;em.opt.RfloatzRedshfitsrc.redshift;pos.heliocentricfloatq_z[3/4] Redshift quality flag (see Sect. 2.4) (2)meta.code.qual;src.redshiftintEmLine[V-] V indicates objects which show emission lines in their spectra (e.g. [OII] {lambda}3727)meta.codecharMemb[V-] V indicates objects which are determined to be cluster members (see Section 3.2)pos.cartesian.ycharr? Projected distance from the BCG position as given in Menanteau et al. (2013ApJ...765...67M)Mpcpos.distancefloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/449/4010/tablea1Spectroscopic redshifts of galaxies in the direction of ACT-CL J0045.2-0152 measured using SALT RSSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID numbermeta.id;meta.mainintMask[1234S] Mask number or S (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmagSDSS r magnitudemagphot.mag;em.opt.RfloatzRedshfitsrc.redshift;pos.heliocentricfloatq_z[3/4] Redshift quality flag (see Sect. 2.4) (2)meta.code.qual;src.redshiftintEmLine[V-] V indicates objects which show emission lines in their spectra (e.g. [OII] {lambda}3727)meta.codecharMemb[V-] V indicates objects which are determined to be cluster members (see Section 3.2)pos.cartesian.ycharr? Projected distance from the BCG position as given in Menanteau et al. (2013ApJ...765...67M)Mpcpos.distancefloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/449/4010/tablea2Spectroscopic redshifts of galaxies in the direction of ACT-CL J0156.4-0123 measured using SALT RSSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID numbermeta.id;meta.mainintMask[1234S] Mask number or S (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmagSDSS r magnitudemagphot.mag;em.opt.RfloatzRedshfitsrc.redshift;pos.heliocentricfloatq_z[3/4] Redshift quality flag (see Sect. 2.4) (2)meta.code.qual;src.redshiftintEmLine[V-] V indicates objects which show emission lines in their spectra (e.g. [OII] {lambda}3727)meta.codecharMemb[V-] V indicates objects which are determined to be cluster members (see Section 3.2)pos.cartesian.ycharr? Projected distance from the BCG position as given in Menanteau et al. (2013ApJ...765...67M)Mpcpos.distancefloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/449/4010/tablea3Spectroscopic redshifts of galaxies in the direction of ACT-CL J0219.9+0129 measured using SALT RSSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID numbermeta.id;meta.mainintMask[1234S] Mask number or S (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmagSDSS r magnitudemagphot.mag;em.opt.RfloatzRedshfitsrc.redshift;pos.heliocentricfloatq_z[3/4] Redshift quality flag (see Sect. 2.4) (2)meta.code.qual;src.redshiftintEmLine[V-] V indicates objects which show emission lines in their spectra (e.g. [OII] {lambda}3727)meta.codecharMemb[V-] V indicates objects which are determined to be cluster members (see Section 3.2)pos.cartesian.ycharr? Projected distance from the BCG position as given in Menanteau et al. (2013ApJ...765...67M)Mpcpos.distancefloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/449/4010/tablea4Spectroscopic redshifts of galaxies in the direction of ACT-CL J0342.7-0017 measured using SALT RSSIDID numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMask[1234S] Mask number or S (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmagSDSS r magnitudemagphot.mag;em.opt.RfloatzRedshfitsrc.redshift;pos.heliocentricfloatq_z[3/4] Redshift quality flag (see Sect. 2.4) (2)meta.code.qual;src.redshiftintEmLine[V-] V indicates objects which show emission lines in their spectra (e.g. [OII] {lambda}3727)meta.codecharMemb[V-] V indicates objects which are determined to be cluster members (see Section 3.2)pos.cartesian.ycharr? Projected distance from the BCG position as given in Menanteau et al. (2013ApJ...765...67M)Mpcpos.distancefloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/449/4010/tablea5Spectroscopic redshifts of galaxies in the direction of ACT-CL J0348.6-0028 measured using SALT RSSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID numbermeta.id;meta.mainintMask[1234S] Mask number or S (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmagSDSS r magnitudemagphot.mag;em.opt.RfloatzRedshfitsrc.redshift;pos.heliocentricfloatq_z[3/4] Redshift quality flag (see Sect. 2.4) (2)meta.code.qual;src.redshiftintEmLine[V-] V indicates objects which show emission lines in their spectra (e.g. [OII] {lambda}3727)meta.codecharMemb[V-] V indicates objects which are determined to be cluster members (see Section 3.2)pos.cartesian.ycharr? Projected distance from the BCG position as given in Menanteau et al. (2013ApJ...765...67M)Mpcpos.distancefloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/449/4010/tablea6Spectroscopic redshifts of galaxies in the direction of ACT-CL J2058.8+0123 measured using SALT RSSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDID numbermeta.id;meta.mainintMask[1234S] Mask number or S (1)meta.id;instrcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmagSDSS r magnitudemagphot.mag;em.opt.RfloatzRedshfitsrc.redshift;pos.heliocentricfloatq_z[3/4] Redshift quality flag (see Sect. 2.4) (2)meta.code.qual;src.redshiftintEmLine[V-] V indicates objects which show emission lines in their spectra (e.g. [OII] {lambda}3727)meta.codecharMemb[V-] V indicates objects which are determined to be cluster members (see Section 3.2)pos.cartesian.ycharr? Projected distance from the BCG position as given in Menanteau et al. (2013ApJ...765...67M)Mpcpos.distancefloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar