2007A&A...467..485H

Query : 2007A&A...467..485H

2007A&A...467..485H - Astronomy and Astrophysics, volume 467485-499 (2007/5-4)

Robust quantitative measures of cluster X-ray morphology, and comparisons between cluster characteristics.

HASHIMOTO Y., BOEHRINGER H., HENRY J.P., HASINGER G. and SZOKOLY G.

Abstract (from CDS):

To investigate the possible relationships between dynamical status and other important characteristics of galaxy clusters, we conducted a study of X-ray cluster morphology using a sample of 101 clusters at redshift z∼0.05-1 taken from the Chandra archive. The X-ray morphology is quantitatively characterized by a series of objectively measured simple statistics of the X-ray surface brightness distribution, which are designed to be robust against variations of image quality caused by various exposure times and various cluster redshifts. Using these measures, we quantitatively investigated the relationships between the cluster X-ray morphology and various other cluster characteristics. We found: (1) Our measures are robust against various image quality effects introduced by exposure time difference, and various cluster redshifts. (2) The distorted and non-distorted clusters occupy well-defined loci in the L-T plane, demonstrating that the measurements of the global luminosity and temperature for distorted clusters should be interpreted with caution, or alternatively, a rigorous morphological characterization is necessary when we use a sample of clusters with heterogeneous morphological characteristics to investigate the L-T or other related scaling relations. (3) Ellipticity and Offcenterness show no evolutionary effects between high and low redshift cluster subsets, while there may be a hint of weak evolution for Concentration and Asymmetry, such that high-z clusters show more distorted morphology. (4) No correlation is found between X-ray morphology and X-ray luminosity or X-ray morphology and X-ray temperature of clusters, implying that interaction of clusters may not enhance or decrease the luminosity or temperature of clusters for extended periods of time. (5) Clusters are scattered and occupy various places in the plane composed of two X-ray morphological measures, showing a wide variety of characteristics. (6) Relatively strong correlations in Asymmetry-Concentration and Offcenter-Concentration plots indicate that low concentration clusters generally show a high degree of asymmetry or skewness, illustrating the fact that there are not many highly-extended smooth symmetric clusters. Similarly, a correlation between Asymmetry and Ellipticity may imply that there are not many highly-elongated but otherwise smooth symmetric clusters.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: high-redshift - X-rays: galaxies: clusters - galaxies: evolution

Simbad objects: 104

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Number of rows : 104
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 0016+16 ClG 00 18 33.3 +16 26 36           ~ 517 0
2 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
3 ClG J0030+2618 ClG 00 30 33.6 +26 18 16           ~ 65 0
4 ACO 68 ClG 00 37 06.2 +09 09 33           ~ 195 0
5 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
6 ACO 115 ClG 00 55 59 +26 23.2           ~ 295 1
7 ClG J0152-1358 ClG 01 52 41.3 -13 58 13           ~ 262 3
8 ACO 267 ClG 01 52 43.016 +00 59 58.90           ~ 241 0
9 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 825 0
10 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
11 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
12 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
13 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
14 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
15 ACT-CL J0438.9+0716 ClG 04 39 00.7 +07 15 45           ~ 62 0
16 BAX 069.7593+05.3453 ClG 04 39 02.2 +05 20 43           ~ 82 0
17 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
18 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 368 0
19 ClG J0542-4100 ClG 05 42 49.9 -40 59 58           ~ 67 0
20 ACO 586 ClG 07 32 20.3 +31 37 58           ~ 196 0
21 ZwCl 0735+7421 ClG 07 41 40.3 +74 14 58     17.70     ~ 273 0
22 BAX 124.9136+63.6101 ClG 08 19 26.0 +63 37 26           ~ 21 0
23 BAX 125.2599+07.8631 ClG 08 21 02.4 +07 51 47           ~ 72 1
24 ZwCl 0839+2937 ClG 08 42 55.9 +29 27 26     17.0     ~ 93 0
25 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
26 ClG J0848+4456 ClG 08 48 46.9 +44 56 22           ~ 62 1
27 ClG J0849+4452 ClG 08 48 58.8 +44 51 53           ~ 107 1
28 ZwCl 0847+3617 ClG 08 50 12.0 +36 03 36           ~ 75 0
29 ACO 750 ClG 09 09 06.7 +11 01 48           ~ 105 1
30 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
31 ClG J0910+5422 ClG 09 10 44.9 +54 22 09           ~ 94 0
32 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
33 ACO 780 ClG 09 18 30 -12 15.7           ~ 469 0
34 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 167 0
35 ZwCl 0947+1723 ClG 09 49 51.8 +17 07 05           ~ 92 0
36 ZwCl 0949+5207 ClG 09 52 49.1 +51 53 05           ~ 141 0
37 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 414 0
38 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 297 0
39 ACO 1068 ClG 10 40 47.1 +39 57 19           ~ 232 0
40 ClG J1053+5735 ClG 10 53 43.4 +57 35 21           ~ 31 1
41 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 458 0
42 ACO 1201 ClG 11 12 54.4 +13 26 08           ~ 131 1
43 ClG J1113-2615 ClG 11 13 05.7 -26 15 36           ~ 37 0
44 ACO 1204 ClG 11 13 32.2 +17 35 40           ~ 101 0
45 ClG J1120+2326 ClG 11 20 57.9 +23 26 41           ~ 42 0
46 ClG 1137+66 ClG 11 40 23.0 +66 08 16     21.0     ~ 141 0
47 ACO 1423 ClG 11 57 17.3206 +33 36 39.364           ~ 181 0
48 RX J1158.8+0129 X 11 58.8 +01 29           ~ 1 0
49 ZwCl 1215+0400 ClG 12 17 43.62 +03 38 51.5           ~ 169 0
50 ClG J1221+4918 ClG 12 21 25.0 +49 18 07           ~ 60 0
51 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 228 0
52 ClG J1252-2927 ClG 12 52 54.4 -29 27 17           ~ 158 0
53 ACO 1651 ClG 12 59 27.3 -04 10 49           ~ 307 0
54 ACO 1682 ClG 13 06 49.7 +46 32 59           ~ 149 1
55 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
56 ACO 1722 ClG 13 20 08.3 +70 04 33           ~ 63 0
57 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 266 2
58 NAME ACO 1758S GrG 13 32 32.8 +50 24 48           ~ 74 0
59 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
60 ACO 1763 ClG 13 35 20.1 +41 00 04           ~ 335 0
61 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 577 0
62 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
63 ClG J1350+6007 ClG 13 50 48.55 +60 07 06.7           ~ 46 0
64 ZwCl 1358+6245 ClG 13 59 54.3 +62 30 36     18.5     ~ 370 0
65 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
66 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
67 [VMF98] 158 ClG 14 16 28.1 +44 46 38           ~ 50 0
68 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
69 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 309 0
70 ACO 2034 ClG 15 10 03.9 +33 30 57           ~ 248 1
71 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
72 ClG J1514+3636 ClG 15 14 22.0 +36 36 22     19.0     ~ 136 0
73 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
74 ACO 2069 ClG 15 24 02.92 +29 53 20.3           ~ 165 0
75 ClG J1524+0957 ClG 15 24 40.3 +09 57 35           ~ 64 0
76 LEDA 1900245 Bla 15 32 53.780 +30 20 59.41   19.1   15.7 17.819 ~ 155 1
77 ClG J1532+3021 ClG 15 32 53.8 +30 21 00           ~ 122 0
78 ACO 2111 ClG 15 39 40.9 +34 25 04           ~ 188 0
79 ACO 2125 ClG 15 41 14.1 +66 15 57           ~ 124 1
80 ClG 1621+26 ClG 16 23 35.7 +26 33 50           ~ 145 0
81 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
82 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
83 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
84 ClG J1641+4001 ClG 16 41 52.3 +40 01 29           ~ 43 0
85 BAX 252.7839+04.9926 ClG 16 51 08.2 +04 59 34           ~ 50 0
86 ClG J1701+6414 ClG 17 01 22.6 +64 14 09           ~ 78 0
87 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 301 0
88 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
89 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
90 ClG J1716+6708 ClG 17 16 49.6 +67 08 30           ~ 137 0
91 ACO 2259 ClG 17 20 09.2 +27 40 09           ~ 131 0
92 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 284 0
93 ACO 2261 ClG 17 22 26.9 +32 07 58           ~ 370 0
94 ACO 2294 ClG 17 24 10.1 +85 53 09           ~ 69 0
95 NAME NEP reg 18 00 00.000 +66 33 38.55           ~ 430 0
96 RXC J1844.0+4533 ClG 18 44 01.8 +45 33 24           ~ 28 0
97 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
98 ClG 2053-04 ClG 20 56 21.2 -04 37 46   21.0       ~ 168 0
99 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 308 0
100 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
101 ACO 2409 ClG 22 00 52.7 +20 58 27           ~ 101 0
102 BAX 337.1433+20.6131 ClG 22 28 32.6 +20 37 08           ~ 132 0
103 ClG J2302+0844 ClG 23 02 48.1 +08 43 50           ~ 43 0
104 ACO 2552 ClG 23 11 31.7 +03 37 44           ~ 87 0

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