2002ApJ...579..577G

Query : 2002ApJ...579..577G

2002ApJ...579..577G - Astrophys. J., 579, 577-586 (2002/November-2)

Tests of the Las Campanas distant cluster survey from confirmation observations for the ESO distant cluster survey.

GONZALEZ A.H., ZARITSKY D., SIMARD L., CLOWE D. and WHITE S.D.M.

Abstract (from CDS):

The ESO Distant Cluster Survey (EDisCS) is a photometric and spectroscopic study of the galaxy cluster population at two epochs, z≃0.5 and z≃0.8, drawn from the Las Campanas Distant Cluster Survey (LCDCS). We report results from the initial candidate-confirmation stage of the program and use these results to probe the properties of the LCDCS. Of the 30 candidates targeted, we find statistically significant overdensities of red galaxies near 28. Of the 10 additional candidates serendipitously observed within the fields of the targeted 30, we detect red galaxy overdensities near six. We test the robustness of the published LCDCS estimated redshifts to misidentification of the brightest cluster galaxy (BCG) in the survey data and measure the spatial alignment of the published cluster coordinates, the peak red galaxy overdensity, and the BCG. We conclude that for LCDCS clusters out to z∼0.8, (1) the LCDCS coordinates agree with the centroid of the red galaxy overdensity to within 25" (∼150 h–1 kpc) for 34 out of 37 candidates with 3 σ galaxy overdensities, (2) BCGs are typically coincident with the centroid of the red galaxy population to within a projected separation of 200 h–1 kpc (32 out of 34 confirmed candidates), (3) the red galaxy population is strongly concentrated, and (4) the misidentification of the BCG in the LCDCS causes a redshift error greater than 0.1 in 15%-20% of the LCDCS candidates. These findings together help explain the success of the surface brightness fluctuations detection method.

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Journal keyword(s): Galaxies: Clusters: General - Galaxies: Elliptical and Lenticular, cD - Galaxies: High-Redshift

Simbad objects: 40

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Number of rows : 40
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 ClG J1018-1211 ClG 10 18 46.45 -12 11 52.8     20.35     ~ 30 0
2 LCDCS 0109 ClG 10 37 44.9 -12 45 57           ~ 2 0
3 ClG J1037-1243 ClG 10 37 52.6 -12 43 44           ~ 41 0
4 LCDCS 0127 ClG 10 40 27.3 -11 55 46           ~ 2 0
5 ClG J1040-1155 ClG 10 40 41.6 -11 55 51           ~ 57 0
6 ClG J1054-1146 ClG 10 54 24.2 -11 46 18           ~ 54 0
7 ClG J1054-1245 ClG 10 54 43.5 -12 45 50           ~ 55 0
8 ClG J1059-1253 ClG 10 59 09.5 -12 53 15           ~ 28 0
9 LCDCS 0190 ClG 10 59 23.4 -12 53 19           ~ 2 0
10 ClG J1103-1245 ClG 11 03 42.9 -12 45 18           ~ 18 1
11 LCDCS 0237 ClG 11 16 59.8 -11 51 02           ~ 2 0
12 ClG J1119-1129 ClG 11 19 16.5 -11 29 33           ~ 20 0
13 ClG J1122-1136 ClG 11 22 51.7 -11 36 30           ~ 12 0
14 LCDCS 0294 ClG 11 28 07.0 -12 39 02           ~ 2 0
15 LCDCS 0337 ClG 11 38 01.0 -11 35 30           ~ 2 0
16 ClG J1138-1133 ClG 11 38 10.3 -11 33 59           ~ 46 0
17 ClG J1202-1224 ClG 12 02 43.1 -12 24 31           ~ 26 0
18 LCDCS 0457 ClG 12 07 25.7 -12 42 18           ~ 2 0
19 LCDCS 0458 ClG 12 07 28.7 -12 45 47           ~ 2 0
20 ClG J1216-1201 ClG 12 16 45.10 -12 01 17.3           ~ 71 0
21 ClG J1227-1138 ClG 12 27 53.9 -11 38 20           ~ 47 0
22 ClG J1232-1250 ClG 12 32 30.5 -12 50 33           ~ 51 0
23 ClG J1238-1144 ClG 12 38 33.5 -11 44 28           ~ 14 0
24 LCDCS 0632 ClG 13 01 30.0 -11 38 31           ~ 2 0
25 LCDCS 0633 ClG 13 01 34.8 -11 38 32           ~ 2 0
26 ClG J1301-1138 ClG 13 01 40.1 -11 39 24           ~ 21 0
27 LCDCS 0641 ClG 13 03 16.9 -11 49 25           ~ 2 0
28 LCDCS 0642 ClG 13 03 23.1 -11 53 12           ~ 2 0
29 LCDCS 0665 ClG 13 11 01.0 -12 01 30           ~ 2 0
30 LCDCS 0674 ClG 13 12 53.5 -12 33 40           ~ 2 0
31 LCDCS 0713 ClG 13 22 25.8 -12 20 59           ~ 2 0
32 ClG J1353-1137 ClG 13 53 01.0 -11 37 31           ~ 27 0
33 ClG J1354-1230 ClG 13 54 09.5 -12 30 59           ~ 47 0
34 LCDCS 0854 ClG 13 54 22.7 -11 35 39           ~ 2 0
35 LCDCS 0855 ClG 13 54 30.1 -11 33 28           ~ 2 0
36 ClG J1411-1148 ClG 14 11 03.9 -11 48 22           ~ 32 0
37 LCDCS 0926 ClG 14 11 06.6 -11 50 46           ~ 2 0
38 ClG J1420-1236 ClG 14 20 19.4 -12 36 36           ~ 25 0
39 LCDCS 0975 ClG 14 29 37.3 -12 54 42           ~ 2 0
40 LCDCS 1027 ClG 14 54 31.3 -11 34 24           ~ 2 0

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