2013ApJ...763...93S

Query : 2013ApJ...763...93S

2013ApJ...763...93S - Astrophys. J., 763, 93 (2013/February-1)

SPT-CL J0205-5829: a z = 1.32 evolved massive galaxy cluster in the south pole telescope Sunyaev-Zel'dovich effect survey.

STALDER B., RUEL J., SUHADA R., BRODWIN M., AIRD K.A., ANDERSSON K., ARMSTRONG R., ASHBY M.L.N., BAUTZ M., BAYLISS M., BAZIN G., BENSON B.A., BLEEM L.E., CARLSTROM J.E., CHANG C.L., CHO H.M., CLOCCHIATTI A., CRAWFORD T.M., CRITES A.T., DE HAAN T., DESAI S., DOBBS M.A., DUDLEY J.P., FOLEY R.J., FORMAN W.R., GEORGE E.M., GETTINGS D., GLADDERS M.D., GONZALEZ A.H., HALVERSON N.W., HARRINGTON N.L., HIGH F.W., HOLDER G.P., HOLZAPFEL W.L., HOOVER S., HRUBES J.D., JONES C., JOY M., KEISLER R., KNOX L., LEE A.T., LEITCH E.M., LIU J., LUEKER M., LUONG-VAN D., MANTZ A., MARRONE D.P., McDONALD M., McMAHON J.J., MEHL J., MEYER S.S., MOCANU L., MOHR J.J., MONTROY T.E., MURRAY S.S., NATOLI T., NURGALIEV D., PADIN S., PLAGGE T., PRYKE C., REICHARDT C.L., REST A., RUHL J.E., SALIWANCHIK B.R., SARO A., SAYRE J.T., SCHAFFER K.K., SHAW L., SHIROKOFF E., SONG J., SPIELER H.G., STANFORD S.A., STANISZEWSKI Z., STARK A.A., STORY K., STUBBS C.W., VAN ENGELEN A., VANDERLINDE K., VIEIRA J.D., VIKHLININ A., WILLIAMSON R., ZAHN O. and ZENTENO A.

Abstract (from CDS):

The galaxy cluster SPT-CL J0205-5829 currently has the highest spectroscopically confirmed redshift, z = 1.322, in the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. XMM-Newton observations measure a core-excluded temperature of TX= 8.7+1.0–0.8 keV producing a mass estimate that is consistent with the Sunyaev-Zel'dovich-derived mass. The combined SZ and X-ray mass estimate of M500= (4.8±0.8)x1014 h–170M☉makes it the most massive known SZ-selected galaxy cluster at z > 1.2 and the second most massive at z > 1. Using optical and infrared observations, we find that the brightest galaxies in SPT-CL J0205-5829 are already well evolved by the time the universe was <5 Gyr old, with stellar population ages ≳ 3 Gyr, and low rates of star formation (<0.5 M☉/yr). We find that, despite the high redshift and mass, the existence of SPT-CL J0205-5829 is not surprising given a flat ΛCDM cosmology with Gaussian initial perturbations. The a priori chance of finding a cluster of similar rarity (or rarer) in a survey the size of the 2500 deg2 SPT-SZ survey is 69%.

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Journal keyword(s): early universe - galaxies: clusters: individual: SPT-CL J0205-5829 - galaxies: evolution - galaxies: formation - large-scale structure of universe

Nomenclature: Table 1: [SRS2013] JHHMMSS.ss+DDMMSS.s N=9

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ACT-CL J0102-4915 ClG 01 02 52.50 -49 14 58.0           ~ 296 0
2 [SRS2013] J020541.06-583006.9 G 02 05 41.069 -58 30 06.95           ~ 2 0
3 [RBB2014] J020543.00-582936.4 G 02 05 43.003 -58 29 36.42           ~ 5 0
4 [SRS2013] J020543.07-582956.9 G 02 05 43.075 -58 29 56.94           ~ 2 0
5 ACT-CL J0205.7-5829 ClG 02 05 46.5 -58 29 08           ~ 54 0
6 [RBB2014] J020546.57-582907.1 G 02 05 46.574 -58 29 07.12           ~ 4 0
7 [SRS2013] J020547.22-582901.5 G 02 05 47.225 -58 29 01.57           ~ 2 0
8 NAME CMB2024 SPT-CL J0205-5829 BCG BiC 02 05 47.702 -58 28 55.56           ~ 3 0
9 [SRS2013] J020548.26-582848.4 G 02 05 48.269 -58 28 48.40           ~ 3 0
10 [SRS2013] J020556.50-582730.7 G 02 05 56.501 -58 27 30.74           ~ 2 0
11 [SRS2013] J020557.04-582713.9 G 02 05 57.041 -58 27 13.90           ~ 2 0
12 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
13 ACT-CL J2106.0-5844 ClG 21 06 04.3 -58 44 32           ~ 103 0

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