2000A&A...361...13A

Query : 2000A&A...361...13A

2000A&A...361...13A - Astronomy and Astrophysics, volume 361, 13-18 (2000/9-1)

Uncertainties on clusters of galaxies distances.

ADAMI C. and ULMER M.P.

Abstract (from CDS):

We investigate in this paper the error on the cluster redshift estimate as a function of: (1) the number of galaxy structures along the line of sight; (2) the morphology of the clusters (regular/substructures); (3) the nature of the observed galaxies (cD/normal galaxies); (4) the number of observed galaxies; and (5) the distance of the clusters. We find that if we use cD galaxies we have errors of less than 2% (at the 1-σ level) for the cluster distances except when the clusters are very complex. In those cases when we use five redshift measurements along the cluster lines of sight to compute the mean redshift, the mean redshift estimate error is less than 5% for the clusters closer than z=0.30. The same error of 5% for clusters in z=[0.30;0.60] requires about 12 redshifts measurements.

Abstract Copyright: ∼

Journal keyword(s): methods: numerical - methods: statistical - galaxies: clusters: general

Simbad objects: 63

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Number of rows : 63
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ACO 2717 ClG 00 03 12.9 -35 56 13           ~ 136 0
2 ACO 2721 ClG 00 06 02.1 -34 43 32           ~ 92 0
3 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 142 0
4 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 502 0
5 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 909 0
6 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 555 2
7 ACO 151 ClG 01 08 52.3 -15 25 01           ~ 189 1
8 ACO 2877 ClG 01 09 49.3 -45 54 02           ~ 146 2
9 ACO 168 ClG 01 15 07.58 +00 19 10.8           ~ 360 2
10 ACO 193 ClG 01 25 07.3 +08 41 36           ~ 186 0
11 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 399 3
12 ACO 401 ClG 02 58 56.9 +13 34 56           ~ 566 0
13 ACO 3094 ClG 03 11 25.00 -26 55 52.2           ~ 60 0
14 ACO 3112 ClG 03 17 52.4 -44 14 35           ~ 311 1
15 ACO 3122 ClG 03 22 10.9 -41 20 15           ~ 59 0
16 ACO 3128 ClG 03 29 50.6 -52 34 48           ~ 176 3
17 ACO 3158 ClG 03 42 39.6 -53 37 50           ~ 304 0
18 ACO 3223 ClG 04 08 34.5 -30 49 08           ~ 53 2
19 ACO 496 ClG 04 33 38.8 -13 15 59           ~ 694 2
20 ACO 514 ClG 04 47 40.0 -20 25 44           ~ 140 0
21 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 352 0
22 ACO 3341 ClG 05 25 31.859 -31 35 56.05           ~ 51 0
23 ACO 3354 ClG 05 34 39 -28 30.1           ~ 22 0
24 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 305 0
25 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 202 1
26 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 209 0
27 ACO 754 ClG 09 09 08.4 -09 39 58           ~ 666 1
28 ClG 1008-12 ClG 10 10 34.1 -12 39 48     18.0     ~ 152 0
29 ACO 978 ClG 10 20 26.66 -06 31 37.5           ~ 125 1
30 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 838 1
31 ACO 1146 ClG 11 01 20.6 -22 43 08           ~ 102 0
32 ACO 1185 ClG 11 10 32.15 +28 35 50.4           ~ 259 1
33 ACO 1631 ClG 12 52 50.6 -15 25 37           ~ 171 1
34 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 366 1
35 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4793 2
36 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 442 2
37 ACO 1795 ClG 13 48 50.48 +26 35 07.4           ~ 1266 0
38 ACO 1809 ClG 13 53 07.68 +05 08 32.7           ~ 170 0
39 ZwCl 1358+6245 ClG 13 59 54.3 +62 30 36     18.5     ~ 361 0
40 ACO 1983 ClG 14 52 59.33 +16 46 11.0           ~ 242 1
41 ACO 2029 ClG 15 10 56.2 +05 44 42           ~ 943 0
42 ACO 2040 ClG 15 12 44.00 +07 27 34.5           ~ 139 1
43 ClG J1514+3636 ClG 15 14 22.0 +36 36 22     19.0     ~ 136 0
44 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 730 1
45 ACO 2107 ClG 15 39 39.04 +21 46 57.8           ~ 253 0
46 ACO 2122 ClG 15 44 55.93 +36 06 05.2           ~ 229 0
47 ACO 2142 ClG 15 58 14.38 +27 12 57.8           ~ 768 0
48 ClG 1621+26 ClG 16 23 35.7 +26 33 50           ~ 142 0
49 ACO 3651 ClG 19 52 10.9 -55 05 16           ~ 63 0
50 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 627 1
51 ACO 3695 ClG 20 34 47.7 -35 49 39           ~ 86 2
52 ACO 3705 ClG 20 41 47.1 -35 10 30           ~ 45 0
53 ACO 3716 ClG 20 51 16.7 -52 41 43           ~ 115 1
54 ACO 3744 ClG 21 07 13.8 -25 28 54           ~ 77 1
55 ACO 3806 ClG 21 46 37.9 -57 17 07           ~ 52 0
56 ACO 3809 ClG 21 46 57.5 -43 54 06           ~ 89 0
57 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 687 2
58 ACO 3822 ClG 21 54 06.2 -57 50 49           ~ 87 0
59 ACO 3825 ClG 21 58 22.4 -60 23 39           ~ 61 0
60 ACO 3888 ClG 22 34 23.0 -37 43 29           ~ 138 1
61 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 503 2
62 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 335 3
63 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 352 0

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