1998A&A...338..813W

Query : 1998A&A...338..813W

1998A&A...338..813W - Astronomy and Astrophysics, volume 338813-818 (1998/10-3)

Updating the σ-T relationship for galaxy clusters.

WU X.-P., FANG L.-Z. and XU W.

Abstract (from CDS):

The relationship between the X-ray determined temperature T of the intracluster gas and the optical measured velocity dispersion σ of the cluster galaxies is often believed to be not only a straightforward but also robust test for the dynamical properties of galaxy clusters. Here, we present the σ-T relationship using the 94 clusters drawn from the largest sample of 149 clusters in literature, for which both σ and T are observationally determined. Employment of the doubly weighted orthogonal distance regression to our sample yields σ=102.47±0.06T0.67±0.09, indicating an apparent deviation of dynamical state from that predicted by the isothermal and hydrostatic equilibrium model for galaxy clusters, though the average ratio βspec of specific energy in galaxies to that in gas is found to be in excellent agreement with unity. It shows that a nonisothermal gas distribution with a mean polytropic index of γ=1.3 can account for the reported σ-T relationship, while overall clusters can still be regarded as dynamically-relaxed systems.

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/A+A/338/813): table1.dat table1.ps table1.tex>

Simbad objects: 141

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Number of rows : 141
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 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
2 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 517 0
3 ACO 21 ClG 00 20 38.75 +28 41 40.5           ~ 122 0
4 ACO 74 ClG 00 38 53 -22 18.5           ~ 41 0
5 ACO 77 ClG 00 40 34.2 +29 31 27           ~ 76 0
6 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
7 ACO 115 ClG 00 55 59 +26 23.2           ~ 295 1
8 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 577 2
9 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 391 1
10 ACO 2877 ClG 01 09 49.3 -45 54 02           ~ 160 2
11 ACO 154 ClG 01 10 58.1 +17 39 56           ~ 140 1
12 ACO 168 ClG 01 15 07.58 +00 19 10.8           ~ 379 2
13 ACO 193 ClG 01 25 07.3 +08 41 36           ~ 192 0
14 ACO 194 ClG 01 26 01.3 -01 22 02           ~ 363 2
15 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
16 ACO 367 ClG 02 36 36.0 -19 22 16           ~ 52 0
17 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 825 0
18 ACO 376 ClG 02 45 48 +36 51.6           B8.5 161 1
19 2A 0251+413 ClG 02 54 26.6 +41 33 25           ~ 328 1
20 ACO 397 ClG 02 56 58 +15 57.0           ~ 81 0
21 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 408 3
22 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
23 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
24 ACO 407 ClG 03 01 43.7 +35 49 48           ~ 113 0
25 ACO 3112 ClG 03 17 52.9 -44 15 06           ~ 329 1
26 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
27 ACO 3122 ClG 03 22 10.9 -41 20 15           ~ 62 0
28 ACO 3128 ClG 03 29 50.6 -52 34 48           ~ 183 3
29 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
30 ACO 458 ClG 03 45 50.6 -24 16 42           ~ 56 0
31 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
32 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
33 ACO 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
34 ClG 0440+02 ClG 04 43 09.7 +02 10 19     17.03     ~ 129 0
35 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
36 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 368 0
37 ACO S 506 ClG 05 01 04.4 -24 24 41           ~ 60 0
38 ACO 539 ClG 05 16 35.1 +06 27 14           ~ 255 2
39 ACO 548 ClG 05 47 01.7 -25 36 59           B8 209 2
40 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
41 ACO 3389 ClG 06 21 47.4 -64 57 35           ~ 60 3
42 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 222 1
43 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 229 0
44 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 312 1
45 ACO 578 ClG 07 25 01.3 +66 59 07           ~ 45 0
46 ACO 671 ClG 08 28 48.68 +30 27 07.0           ~ 168 0
47 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
48 ZwCl 0839+2937 ClG 08 42 55.9 +29 27 26     17.0     ~ 93 0
49 ACO 744 ClG 09 07 20.0 +16 39 25           ~ 81 0
50 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
51 ACO 779 ClG 09 20 02.70 +33 45 29.7           ~ 261 0
52 ACO 851 ClG 09 43 01.2 +46 59 54   18.9       ~ 334 0
53 ClG 1008-12 ClG 10 10 34.1 -12 39 48     18.0     ~ 155 0
54 ACO 957 ClG 10 14 02.35 -00 53 30.0           ~ 225 2
55 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 414 0
56 ACO 999 ClG 10 23 22.1 +12 51 48           ~ 91 1
57 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
58 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 458 0
59 ACO 1142 ClG 11 00 56.74 +10 30 15.2           ~ 157 1
60 ACO 1146 ClG 11 01 20.6 -22 43 08           ~ 104 0
61 ACO 1185 ClG 11 10 32.15 +28 35 50.4           ~ 271 1
62 ACO 1213 ClG 11 16 26.98 +29 16 23.9           ~ 155 0
63 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
64 ACO 1291 ClG 11 32 11.20 +56 01 31.3           ~ 135 0
65 ACO 1314 ClG 11 34 53.0 +49 05 18           ~ 234 1
66 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
67 ACO 1377 ClG 11 47 18.24 +55 43 29.1           ~ 148 1
68 NAME NGC 4073 Group GrG 12 04 44.08 +01 48 40.9     13.53     ~ 292 0
69 ClG 1224+20 ClG 12 27 14.9 +19 51 06   19.0       ~ 96 0
70 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
71 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
72 ACO 1631 ClG 12 52 50.6 -15 25 37           ~ 176 1
73 ACO 3528 ClG 12 54 18.2 -29 01 16           ~ 166 1
74 ACO 3530 ClG 12 55 36.0 -30 20 49           ~ 109 0
75 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
76 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 185 2
77 ACO 1651 ClG 12 59 27.3 -04 10 49           ~ 307 0
78 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
79 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
80 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 268 2
81 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
82 ACO 1750 ClG 13 30 50.44 -01 51 27.1           ~ 190 2
83 BAX 202.9000-31.8128 ClG 13 31 28.8 -31 49 40           ~ 88 1
84 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
85 ACO 1767 ClG 13 36 06.92 +59 10 34.3           ~ 182 0
86 ACO 1775 ClG 13 41 50.60 +26 21 10.6           ~ 324 0
87 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
88 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
89 ACO 1809 ClG 13 53 07.68 +05 08 32.7           ~ 179 0
90 ZwCl 1358+6245 ClG 13 59 54.3 +62 30 36     18.5     ~ 370 0
91 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
92 ACO 1913 ClG 14 26 43.42 +16 40 26.1           ~ 100 1
93 ACO 1940 ClG 14 35 30.56 +55 09 33.9           ~ 95 0
94 ACO 1983 ClG 14 52 59.33 +16 46 11.0           ~ 249 1
95 ACO 1991 ClG 14 54 41.53 +18 38 08.4           ~ 349 1
96 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 309 0
97 ACO 2009 ClG 15 00 15.2 +21 22 09           ~ 113 0
98 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
99 ACO 2040 ClG 15 12 44.00 +07 27 34.5           ~ 144 1
100 ClG J1514+3636 ClG 15 14 22.0 +36 36 22     19.0     ~ 136 0
101 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 756 1
102 ACT-CL J1521.8+0742 ClG 15 21 48.8 +07 43 41     15.13     ~ 326 0
103 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
104 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
105 ACO 2079 ClG 15 28 04.7 +28 52 40           ~ 138 0
106 ACO 2092 ClG 15 33 19.99 +31 09 12.3           ~ 130 0
107 ACO 2107 ClG 15 39 39.04 +21 46 57.8           ~ 270 0
108 ACO 2122 ClG 15 44 55.93 +36 06 05.2           ~ 243 0
109 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
110 ACO 2147 ClG 16 02 11.96 +15 55 11.5           ~ 416 0
111 ACO 2151 ClG 16 05 15.0 +17 44 55           ~ 594 3
112 ACO 2152 ClG 16 05 22.4 +16 26 55           ~ 165 0
113 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 340 2
114 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
115 ACO 2197 ClG 16 27 48.01 +40 58 04.5           ~ 290 0
116 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
117 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
118 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 301 0
119 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
120 ACO 2250 ClG 17 11.0 +39 41           ~ 69 0
121 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
122 ClG J1716+6708 ClG 17 16 49.6 +67 08 30           ~ 137 0
123 ACO 2271 ClG 17 17 17.5 +78 01 00           ~ 70 0
124 ACO S 805 ClG 18 47 14.4 -63 19 45           ~ 137 3
125 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
126 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
127 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
128 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 390 0
129 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
130 ACO 2440 ClG 22 23 52.6 -01 35 47           ~ 137 1
131 ACO 3888 ClG 22 34 26.3 -37 44 29           ~ 151 1
132 ACO 2554 ClG 23 12 18.7 -21 30 54           ~ 100 1
133 ACO 2589 ClG 23 24 00.5 +16 49 29           ~ 327 1
134 ACO 2593 ClG 23 24 27.15 +14 33 40.2           ~ 231 0
135 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 265 0
136 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2
137 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 280 3
138 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3
139 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 364 0
140 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1
141 ACO 4067 ClG 23 58 49.9 -60 37 25           ~ 55 0

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