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


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

2010A&A...516A..32G - Astronomy and Astrophysics, volume 516, A32-32 (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 - 2022
#notes
1 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 839 0
2 ACO 119 ClG 00 56 16.8 -01 15 00           ~ 534 2
3 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 675 1
4 2MAXI J0254+416 ClG 02 54 32.2 +41 35 10           ~ 304 1
5 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 366 0
6 ACO 401 ClG 02 58 56.9 +13 34 56           ~ 535 0
7 ACO 3112 ClG 03 17 52.4 -44 14 35           ~ 297 1
8 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2093 1
9 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 356 1
10 ACO 3158 ClG 03 42 39.6 -53 37 50           ~ 280 0
11 ACO 478 ClG 04 13 20.7 +10 28 35           ~ 482 0
12 ACO 3266 ClG 04 31 11.9 -61 24 23           ~ 382 0
13 ACO 496 ClG 04 33 30.3838 -13 14 21.584           ~ 670 2
14 3C 129 rG 04 49 09.064 +45 00 39.40   19       ~ 251 2
15 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 180 1
16 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 867 1
17 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 287 1
18 ClG 0745-19 ClG 07 47 31.3 -19 17 40           ~ 366 0
19 2MASX J07473129-1917403 BiC 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 399 1
20 ACO 644 ClG 08 17 24.5 -07 30 46           ~ 209 0
21 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 643 1
22 NAME Hya A LIN 09 18 05.6783347248 -12 05 43.634531472   14.38 14.8     ~ 957 1
23 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 805 1
24 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1036 1
25 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6649 3
26 ACO 3526 ClG 12 48 51.8 -41 18 21           ~ 1016 2
27 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 343 1
28 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 160 2
29 ACO 1650 ClG 12 58 36.76 -01 43 34.2           ~ 279 0
30 ACO 1651 ClG 12 59 22.43 -04 11 47.1           ~ 277 0
31 NAME SHAPLEY-CENTAURUS CL SCG 13 06.0 -33 04           ~ 551 0
32 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1067 0
33 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 239 2
34 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 417 2
35 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 293 1
36 ACO 3571 ClG 13 47 28.9 -32 51 57           ~ 269 2
37 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1201 0
38 ACO 2029 ClG 15 10 58.7 +05 45 42           ~ 891 0
39 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 700 1
40 NAME NGC 5920 Group ClG 15 21 50.7 +07 42 18     15.13     ~ 295 0
41 ACO 2065 ClG 15 22 42.6 +27 43 21           ~ 352 0
42 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 379 2
43 ACO 2142 ClG 15 58 20.00 +27 14 00.3           ~ 711 0
44 ACO 2147 ClG 16 02 17.2 +15 53 43           ~ 388 0
45 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1128 1
46 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 414 0
47 NAME Triangulum Australis Cluster ClG 16 38 16.1 -64 20 50           ~ 109 0
48 ACO 2244 ClG 17 02 34.01 +34 04 41.1           ~ 255 0
49 ACO 2256 ClG 17 03 43.5 +78 43 03           ~ 853 1
50 NAME Oph Cluster ClG 17 12 24.7 -23 21 01           ~ 256 0
51 ACO 2255 ClG 17 12 50.04 +64 03 10.6           ~ 530 0
52 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 222 0
53 ACO 2319 ClG 19 20 45.3 +43 57 43           ~ 434 1
54 NAME Cyg A Sy2 19 59 28.35645829 +40 44 02.0966496   16.22 15.10     ~ 2237 2
55 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 590 1
56 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 516 0
57 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 325 3
58 ACO 4059 ClG 23 56 40.7 -34 40 18           ~ 366 1

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2022.05.28-22:17:03

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