2001A&A...379...35Z

Query : 2001A&A...379...35Z

2001A&A...379...35Z - Astronomy and Astrophysics, volume 37935-45 (2001/11-3)

Radio-optically selected clusters of galaxies. II. The cluster sample.

ZANICHELLI A., SCARAMELLA R., VETTOLANI G., VIGOTTI M., BARDELLI S. and ZAMORANI G.

Abstract (from CDS):

We present a sample of 171 candidate groups and clusters of galaxies at intermediate redshift over an area of ≃550sq.degrees at the South Galactic Pole, selected by using optically identified radio sources from the NRAO VLA Sky Survey as tracers of dense environments. Out of these 171 candidates, 76 have a counterpart in the literature while 95 of them are previously unknown clusters. This paper presents the cluster selection technique, based on the search of excesses in the optical surface density of galaxies near identified radiogalaxies, and the first spectroscopic results aimed to confirm the presence of a cluster. Spectroscopy for 11 candidates led to the detection of 9 clusters at a redshift in the range 0.13/0.3, with estimated velocity dispersions ranging from values typical of clusters to those of galaxy groups. These results show that this technique represents a powerful tool for the selection of homogeneous samples of intermediate redshift clusters over a wide range of richness.

Abstract Copyright: ∼

Journal keyword(s): catalogs - radio continuum: galaxies - galaxies: clusters: general - cosmology: observations

VizieR on-line data: <Available at CDS (J/A+A/379/35): table1.dat table2.dat>

Nomenclature: Tables 1, 2, text: ROSC FFFANN, ROSC FFFAANN, N=18. Table 1: ROSC FFFANN NN N=133.

Simbad objects: 67

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Number of rows : 67
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 ROSC 409N15 ClG 00 02 36.0 -28 20 15           ~ 1 0
2 2dFGRS TGS199Z047 GiC 00 05 03.8 -28 03 41   18.741   17.284   ~ 1 0
3 ROSC 409N15 3 GiC 00 05 04.6 -28 03 06           ~ 1 0
4 ROSC 409N15 4 GiC 00 05 05.8 -28 03 37           ~ 1 0
5 2MASX J00050664-2802345 rG 00 05 06.6626393424 -28 02 34.527265224   18.113   16.529   ~ 2 0
6 ROSC 409N15 7 GiC 00 05 09.1 -28 03 40           ~ 1 0
7 ROSC 409N15 9 EmG 00 05 10.9 -28 04 57           ~ 1 0
8 ROSC 409N15 11 GiC 00 05 14.6 -28 03 16           ~ 1 0
9 ROSC 294N15 ClG 00 23 41.0 -39 37 15           ~ 1 0
10 ROSC 294N15 2 GiC 00 26 05.3 -39 21 21           ~ 1 0
11 NVSS J002607-392027 rG 00 26 07.28 -39 20 30.6           ~ 4 1
12 LCRS B002341.3-393739 GiC 00 26 09.17 -39 21 02.6           ~ 2 0
13 2MASX J00261297-3920131 GiC 00 26 12.9809875032 -39 20 12.958844136           ~ 3 0
14 ROSC 294N15 12 GiC 00 26 17.8 -39 20 31           ~ 1 0
15 ROSC 350N71 ClG 00 35 04.0 -34 49 15           ~ 1 0
16 ROSC 350N71 4 GiC 00 37 23.6 -34 31 22           ~ 1 0
17 2MASX J00372430-3432142 GiC 00 37 24.3185082000 -34 32 14.475325740           ~ 2 0
18 ROSC 350N71 7 GiC 00 37 27.6 -34 32 08           ~ 1 0
19 LEDA 660916 rG 00 37 28.7 -34 32 17           ~ 2 0
20 ROSC 350N71 9 GiC 00 37 31.7 -34 32 32           ~ 1 0
21 ROSC 350N71 10 GiC 00 37 34.2 -34 32 13           ~ 1 0
22 ACO S 84 ClG 00 49 23.2 -29 31 33           ~ 89 0
23 [RZZ99] ESP 193 GrG 00 59 36 -39 51.0           ~ 2 0
24 ROSC 295N35 ClG 01 03 11.0 -38 47 15           ~ 1 0
25 ACO 2860 ClG 01 04.1 -39 47           ~ 22 0
26 ROSC 295N35 3 GiC 01 05 20.2 -38 31 37           ~ 1 0
27 ROSC 295N35 4 GiC 01 05 20.8 -38 31 18           ~ 1 0
28 ROSC 295N35 5 GiC 01 05 22.5 -38 32 05           ~ 1 0
29 NVSS J010526-383159 rG 01 05 26.35 -38 32 00.5           ~ 4 1
30 ROSC 295N35 10 GiC 01 05 30.5 -38 32 25           ~ 1 0
31 LCRS B010313.6-384702 GiC 01 05 32.61 -38 30 59.4           ~ 2 0
32 ACO 2871 ClG 01 08 04.1 -36 47 03           ~ 32 0
33 ACO 2878 ClG 01 10 01.77 -29 40 58.3           ~ 9 0
34 ROSC 352N47 ClG 01 14 13.0 -36 44 45           ~ 1 0
35 EDCC 536 ClG 01 15 01.07 -29 49 03.7           ~ 3 0
36 ROSC 475N50 ClG 01 15 13.0 -24 09 45           ~ 1 0
37 ROSC 352N47 4 GiC 01 16 27.4 -36 27 24           ~ 1 0
38 ROSC 352N47 6 GiC 01 16 31.4 -36 27 25           ~ 1 0
39 ROSC 352N47 7 GiC 01 16 33.3 -36 27 03           ~ 1 0
40 ROSC 352N47 8 GiC 01 16 34.9 -36 27 32           ~ 1 0
41 ROSC 352N47 10 GiC 01 16 36.9 -36 28 09           ~ 1 0
42 ROSC 475N50 2 GiC 01 17 32.9 -23 52 44           ~ 1 0
43 ROSC 475N50 3 GiC 01 17 35.0 -23 54 57           ~ 1 0
44 ROSC 475N50 4 GiC 01 17 36.2 -23 55 05           ~ 1 0
45 ROSC 475N50 5 GiC 01 17 37.0 -23 54 50           ~ 1 0
46 ROSC 475N50 6 GiC 01 17 37.8 -23 54 05           ~ 1 0
47 2MASX J01173969-2353391 rG 01 17 39.6862981896 -23 53 39.281452512           ~ 2 0
48 ROSC 475N50 11 * 01 17 43.1 -23 53 02           ~ 1 0
49 ROSC 475N50 12 GiC 01 17 45.5 -23 54 17           ~ 1 0
50 ROSC 352N63 ClG 01 19 50.0 -33 45 15           ~ 1 0
51 ROSC 352N75 ClG 01 21 11.0 -33 17 15           ~ 1 0
52 ROSC 352N63 1 GiC 01 22 00.5 -33 28 51           ~ 1 0
53 ROSC 352N63 2 GiC 01 22 03.1 -33 30 07           ~ 1 0
54 2dFGRS TGS507Z201 GiC 01 22 07.1 -33 29 34   18.955   17.433   ~ 1 0
55 2dFGRS TGS506Z086 rG 01 22 08.0 -33 29 33   19.363   17.911   ~ 1 0
56 ROSC 352N63 7 GiC 01 22 10.0 -33 29 05           ~ 1 0
57 ROSC 352N63 8 GiC 01 22 11.3 -33 29 12           ~ 1 0
58 ACO 2904 ClG 01 22 20.68 -29 18 19.8           ~ 5 0
59 ROSC 352N75 3 GiC 01 23 23.0 -33 01 09           ~ 1 0
60 2MASX J01232702-3302325 GiC 01 23 27.0718792440 -33 02 32.675661780   18.471   16.788   ~ 2 0
61 2MASX J01232821-3301345 rG 01 23 28.2475117080 -33 01 34.762556316   18.154   16.645   ~ 1 0
62 ROSC 352N75 8 GiC 01 23 28.9355695082 -33 00 54.874559603           ~ 2 0
63 ROSC 352N75 12 GiC 01 23 33.3504884903 -33 00 07.425047390           ~ 2 0
64 2dFGRS TGS506Z017 GiC 01 23 33.8 -33 02 54   18.620   17.330   ~ 2 0
65 ROSC 409N44 ClG 23 51 13.0 -31 34 15           ~ 1 0
66 2dFGRS TGS430Z199 rG 23 53 45.3 -31 16 45   18.953   17.416   ~ 1 0
67 2MASX J23535017-3116285 GiC 23 53 50.1340879344 -31 16 28.191636876   18.957   17.458   ~ 1 0

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