2004ApJ...617L..17B


Query : 2004ApJ...617L..17B

2004ApJ...617L..17B - Astrophys. J., 617, L17-L20 (2004/December-2)

RCS 043938-2904.9: a new rich cluster of galaxies at z=0.951.

BARRIENTOS L.F., GLADDERS M.D., YEE H.K.C., INFANTE L., ELLINGSON E., HALL P.B. and HERTLING G.

Abstract (from CDS):

We present deep I, Js, Ksimaging and optical spectroscopy of the newly discovered Red-Sequence Cluster Survey cluster RCS 043938-2904.9. This cluster, drawn from an extensive preliminary list, was selected for detailed study on the basis of its apparent optical richness. Spectroscopy of 11 members places the cluster at z=0.951±0.006 and confirms the photometric redshift estimate from the (R-z) color-magnitude diagram. Analysis of the infrared imaging data demonstrates that the cluster is extremely rich, with excess counts in the Ksband exceeding the expected background counts by 9 σ. The properties of the galaxies in RCS 043938-2904.9 are consistent with those seen in other clusters at similar redshifts. Specifically, the red-sequence color, slope, and scatter and the size-magnitude relation of these galaxies are all consistent with that seen in the few other known high-redshift clusters and indeed are consistent with appropriately evolved properties of local cluster galaxies. The apparent consistency of these systems implies that the rich high-redshift RCS clusters are directly comparable to the few other systems known at z∼1, most of which have been selected on the basis of X-ray emission.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: General

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 1407 GiG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 537 1
2 NGC 1426 GiG 03 42 49.0995354501 -22 06 30.172682100   12.21 11.44 10.90   ~ 185 0
3 ClG J0439-2905 ClG 04 39 38.0 -29 04 55           ~ 6 0
4 ClG J0848+4453 ClG 08 48 34.800 +44 53 41.90           ~ 122 1
5 ClG J0910+5422 ClG 09 10 44.9 +54 22 09           ~ 87 0
6 ClG J1252-2927 ClG 12 52 54.4 -29 27 17           ~ 151 0
7 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4374 2

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2021.07.31-09:56:14

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