J/MNRAS/461/248ivo://CDS.VizieR/J/MNRAS/461/248doi:10.26093/cds/vizier.74610248CDSSifon C.Battaglia N.Hasselfield M.Menanteau F.Barrientos L.F.,Bond J.R.Crichton D.Devlin M.J.Dunner R.Hilton M.Hincks A.D.,Hlozek R.Huffenberger K.M.Hughes J.P.Infante L.Kosowsky A.,Marsden D.Marriage T.A.Moodley K.Niemack M.D.Page L.A.,Spergel D.N.Staggs S.T.Trac H.Wollack E.J.2024-08-16T20:17:48Z2018-01-18T14:26:05ZCDS support team

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

cds-question@unistra.frgalaxy-clustersredshiftedWe present galaxy velocity dispersions and dynamical mass estimates for 44 galaxy clusters selected via the Sunyaev-Zel'dovich (SZ) effect by the Atacama Cosmology Telescope. Dynamical masses for 18 clusters are reported here for the first time. Using N-body simulations, we model the different observing strategies used to measure the velocity dispersions and account for systematic effects resulting from these strategies. We find that the galaxy velocity distributions may be treated as isotropic, and that an aperture correction of up to 7 per cent in the velocity dispersion is required if the spectroscopic galaxy sample is sufficiently concentrated towards the cluster centre. Accounting for the radial profile of the velocity dispersion in simulations enables consistent dynamical mass estimates regardless of the observing strategy. Cluster masses M_200_ are in the range (1-15)x10^14^M_{sun}_. Comparing with masses estimated from the SZ distortion assuming a gas pressure profile derived from X-ray observations gives a mean SZ-to-dynamical mass ratio of 1.10+/-0.13, but there is an additional 0.14 systematic uncertainty due to the unknown velocity bias; the statistical uncertainty is dominated by the scatter in the mass-velocity dispersion scaling relation. This ratio is consistent with previous determinations at these mass scales.2016MNRAS.461..248Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/461/248CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)J/ApJS/122/51 : 10 rich galaxy clusters spectroscopic cat. (Dressler+ 1999)J/ApJ/772/25 : Massive SZE clusters observations with ACT (Sifon+, 2013)J/ApJ/767/15 : Hectospec Cluster Survey (HeCS) (Rines+, 2013)J/MNRAS/449/4010 : SALT galaxy clusters detected by ACT (Kirk+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/461/248https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/461/248http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/461/248https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/461/248https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/461/248http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/461/248GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/461/248/tableb1 (Full spectroscopic catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/461/248/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/461/248/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/461/248/tableb1?GETtext/xml+votable180.050000true3.4389583-0.91838890.0055555555555555565/3072 4460 4774 6/12296 17725 17727 17734-17735 17740-17741 17743 17749 17751-17752 17754 17762-17763 17768 17770-17771 17805 17809 17856 17860 17974 17980 18005 18007 18012-18013 18017 18019-18020 18022 18028-18029 18063 18081 18084 18176 18767 18778 18789 18800 18835 18841 18844 19042-19043 19100 19102 19124 23103 23144 23146-23147 23181 23188-23189 23192 23194 23205 23207 23216 23218 23232-23233 30033 30035 30039 30045 33619 33622 33649 33711 33713 33718 33725 33741 33878 33897 33900 33905 33910 33945 34049 35041 35043 39010 39016 39428https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/461/248?format=asciidefaultJ/MNRAS/461/248/tableb1Full spectroscopic catalogueSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCatalogue designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharn_Name[*] * for BCGmeta.notecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainzRedshiftsrc.redshiftdoublee_zNominal uncertainty on zstat.error;src.redshiftdoubler_zSpectroscopic source (2)meta.ref;pos.frameintMemb[0/1] Membership flag (1)meta.code.errorchar