2016ApJ...816...54Z

Query : 2016ApJ...816...54Z

2016ApJ...816...54Z - Astrophys. J., 816, 54 (2016/January-2)

A Chandra study of temperature distributions of the intracluster medium in 50 galaxy clusters.

ZHU Z., XU H., WANG J., GU J., LI W., HU D., ZHANG C., GU L., AN T., LIU C., ZHANG Z., ZHU J. and WU X.-P.

Abstract (from CDS):

To investigate the spatial distribution of the intracluster medium temperature in galaxy clusters in a quantitative way and probe the physics behind it, we analyze the X-ray spectra from a sample of 50 clusters that were observed with the Chandra ACIS instrument over the past 15 years and measure the radial temperature profiles out to 0.45r500. We construct a physical model that takes into consideration the effects of gravitational heating, thermal history (such as radiative cooling, active galactic nucleus feedback, and thermal conduction), and work done via gas compression, and use it to fit the observed temperature profiles by running Bayesian regressions. The results show that in all cases our model provides an acceptable fit at the 68% confidence level. For further validation, we select nine clusters that have been observed with both Chandra (out to ≳0.3r500) and Suzaku (out to ≳1.5r500) and fit their Chandra spectra with our model. We then compare the extrapolation of the best fits with the Suzaku measurements and find that the model profiles agree with the Suzaku results very well in seven clusters. In the remaining two clusters the difference between the model and the observation is possibly caused by local thermal substructures. Our study also implies that for most of the clusters the assumption of hydrostatic equilibrium is safe out to at least 0.5r500 and the non-gravitational interactions between dark matter and its luminous counterparts is consistent with zero.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: intracluster medium - 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 ZwCl 0003+1035 ClG 00 06 20.2 +10 51 51           ~ 30 0
2 ClG J0011-2850 ClG 00 11 21.623 -28 51 14.44           ~ 7 0
3 ACT-CL J0035.4-2015 ClG 00 35 26.5 -20 15 46           ~ 52 0
4 BAX 013.9612+26.4117 ClG 00 55 50.9 +26 24 35           ~ 29 0
5 2E 0053.2+2604 ClG 00 55 59.4 +26 20 13           ~ 25 0
6 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
7 ACO 3088 ClG 03 07 02.12 -28 39 57.3           ~ 78 0
8 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
9 ACT-CL J0438.9+0716 ClG 04 39 00.7 +07 15 45           ~ 62 0
10 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
11 ACT-CL J0528.8-3927 ClG 05 28 56.2 -39 27 49           ~ 78 0
12 ACO 3378 ClG 06 05 53.7 -35 18 06           ~ 90 1
13 ACO S 592 ClG 06 38 49.40 -53 58 40.8           ~ 75 0
14 PKS 0745-19 rG 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 422 1
15 ClG 0745-1910 ClG 07 47 32.4 -19 18 23           ~ 378 0
16 ACO 644 ClG 08 17 26.1 -07 31 13           ~ 241 0
17 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
18 ClG 0906.5+1110 ClG 09 09 12.7 +10 58 32           ~ 108 0
19 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
20 ACO 780 ClG 09 18 30 -12 15.7           ~ 469 0
21 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 297 0
22 ACO 1132 ClG 10 58 32.05 +56 47 14.2           ~ 145 1
23 ACO 1201 ClG 11 12 54.4 +13 26 08           ~ 131 1
24 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 456 0
25 ACO 1423 ClG 11 57 17.3206 +33 36 39.364           ~ 181 0
26 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 286 0
27 ACO 1553 ClG 12 30 48.000 +10 33 21.60           ~ 95 0
28 ACO 3528 ClG 12 54 18.2 -29 01 16           ~ 166 1
29 ACO 1664 ClG 13 03 42.4 -24 14 44           ~ 136 0
30 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1178 0
31 BAX 202.4458-31.6081 ClG 13 29 47.0 -31 36 29           ~ 80 1
32 ACO 1763 ClG 13 35 20.1 +41 00 04           ~ 335 0
33 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
34 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
35 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
36 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 186 0
37 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
38 ACO 2061 ClG 15 21 19.90 +30 37 13.0           ~ 214 1
39 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
40 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
41 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
42 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
43 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
44 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 301 0
45 ACO 2249 ClG 17 09 36.76 +34 28 04.1           ~ 136 0
46 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
47 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 284 0
48 3C 388.0 SyG 18 44 02.3840387736 +45 33 29.628672300   16.91 15.56     ~ 338 1
49 ACO 3695 ClG 20 34 47.7 -35 49 39           ~ 96 2
50 ACO 2384 ClG 21 52 20.9 -19 32 53           ~ 117 0
51 ACO 2409 ClG 22 00 52.7 +20 58 27           ~ 101 0
52 ACO 3827 ClG 22 01 49.1 -59 57 15           ~ 178 0
53 ACO 2420 ClG 22 10 22.5 -12 11 13           ~ 126 0
54 ACO 3856 ClG 22 18 45.2 -38 53 57           ~ 87 2
55 ACO 2457 ClG 22 35 40.30 +01 31 33.6           ~ 139 0
56 ACO 3921 ClG 22 49 59.0 -64 25 48           ~ 165 1
57 ACO 2537 ClG 23 08 22.3 -02 11 29           ~ 152 0
58 ACO 2667 ClG 23 51 39.37 -26 05 02.7           ~ 190 0

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