2010A&A...516A..32G

Query : 2010A&A...516A..32G

2010A&A...516A..32G - Astronomy and Astrophysics, volume 516A32-32 (2010/6-2)

Cold fronts in galaxy clusters.

GHIZZARDI S., ROSSETTI M. and MOLENDI S.

Abstract (from CDS):

Cold fronts have been observed in several galaxy clusters. Understanding their nature and origin is extremely important for investigating the internal dynamics of clusters. To gain insight into the nature of these features, we carry out a statistical investigation of their occurrence in a sample of galaxy clusters observed with XMM-Newton and correlate this occurrence with different cluster properties. We selected a sample of 45 clusters starting from the B55 flux limited sample (Edge et al., 1990MNRAS.245..559E) and performed a systematic search for cold fronts. We find that a large fraction of clusters host at least one cold front. Cold fronts are easily detected in all systems that are manifestly undergoing a merger event in the plane of the sky, while the presence of these features in the remaining clusters is related to a steep entropy gradient, in agreement with theoretical expectations. Assuming that cold fronts in cool core clusters are triggered by minor merger events, we estimate a minimum of 1/3 merging events per halo per Gyr.

Abstract Copyright: ∼

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

Simbad objects: 58

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Number of rows : 58
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 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
2 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 577 2
3 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
4 2A 0251+413 ClG 02 54 26.6 +41 33 25           ~ 328 1
5 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
6 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
7 ACO 3112 ClG 03 17 52.9 -44 15 06           ~ 329 1
8 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
9 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 402 1
10 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
11 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
12 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
13 ACO 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
14 3C 129 rG 04 49 09.064 +45 00 39.40   19       ~ 273 2
15 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 222 1
16 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
17 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 312 1
18 PKS 0745-19 rG 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 422 1
19 ClG 0745-1910 ClG 07 47 32.4 -19 18 23           ~ 378 0
20 ACO 644 ClG 08 17 26.1 -07 31 13           ~ 241 0
21 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
22 MCG-02-24-007 LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1077 1
23 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
24 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
25 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
26 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
27 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
28 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 185 2
29 ACO 1650 ClG 12 58 42.0 -01 45 45           ~ 325 0
30 ACO 1651 ClG 12 59 27.3 -04 10 49           ~ 307 0
31 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
32 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
33 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 268 2
34 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
35 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
36 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
37 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
38 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
39 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 756 1
40 ACT-CL J1521.8+0742 ClG 15 21 48.8 +07 43 41     15.13     ~ 326 0
41 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
42 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
43 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
44 ACO 2147 ClG 16 02 11.96 +15 55 11.5           ~ 416 0
45 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
46 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
47 BAX 249.5848-64.5165 ClG 16 38 13.2 -64 21 21           ~ 123 0
48 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 301 0
49 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
50 BAX 258.1082-23.3759 ClG 17 12 26.3 -23 21 38           ~ 303 0
51 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
52 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 284 0
53 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
54 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
55 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
56 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 572 0
57 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3
58 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1

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