2015A&A...578A..46E

Query : 2015A&A...578A..46E

2015A&A...578A..46E - Astronomy and Astrophysics, volume 578A, 46-46 (2015/6-1)

The evolution of the spatially resolved metal abundance in galaxy clusters up to z = 1.4.

ETTORI S., BALDI A., BALESTRA I., GASTALDELLO F., MOLENDI S. and TOZZI P.

Abstract (from CDS):

We present the combined analysis of the metal content of 83 objects in the redshift range 0.09-1.39, and spatially resolved in the three bins (0-0.15, 0.15-0.4, >0.4)R500, as obtained with similar analysis using XMM-Newton data in our previous two papers. By combining these two large data sets, we investigate the relations between abundance, temperature, radial position and redshift holding in the intracluster medium. We fit functional forms to the combination of the different physical quantities of interest, i.e., intracluster medium (ICM) metal abundance, radius, and redshift. We use the pseudo-entropy ratio to separate the cool core (CC) cluster population, where the central gas density tends to be relatively higher, cooler and more metal rich, from the non-cool core systems. The average, redshift-independent, metal abundance measured in the three radial bins decreases moving outwards, with a mean metallicity in the core that is even three (two) times higher than the value of 0.16 times the solar abundance in Anders & Grevesse (1989, Geochim. Cosmochim. Acta,, 53, 197) estimated at r>0.4R500 in CC (NCC) objects. We find that the values of the emission-weighted metallicity are well fitted by the relation Z(z)=Z0(1+z)–γ at the given radius. A significant scatter, intrinsic to the observed distribution and of the order of 0.05-0.15, is observed below 0.4R500. The nominal best-fit value of γ is significantly different from zero (>3σ) in the inner cluster regions (γ=1.6 ±0.2) and in CC clusters only. These results are also confirmed with a bootstrap analysis, which provides a still significant negative evolution in the core of CC systems (P>99.9 per cent, when counting the number of random repetitions, which yields γ>0). No redshift evolution is observed when regions above the core (r>0.15R500) are considered. A reasonable good fit of both the radial and redshift dependence is provided from the functional form Z(r,z)=Z0(1+(r/0.15R500)2)–β(1+z)–γ, with (Z0, β, γ) =(0.83±0.13, 0.55±0.07, 1.7±0.6) in CC clusters and (0.39±0.04, 0.37±0.15, 0.5±0.5) for NCC systems. Our results represent the most extensive study of the spatially resolved metal distribution in the cluster plasma as function of redshift. Our study defines the limits that numerical and analytic models describing the metal enrichment in the ICM have to meet.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: intracluster medium - X-rays: galaxies: clusters

VizieR on-line data: <Available at CDS (J/A+A/578/A46): xmm.dat>

Simbad objects: 83

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Number of rows : 83
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ACO 2700 ClG 00 03 49.7 +02 03 59           ~ 89 0
2 BAX 004.5700+16.2958 ClG 00 18 17.0 +16 17 40       19.85   ~ 26 0
3 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 502 0
4 BAX 004.6896+16.0281 ClG 00 18 48.2 +16 02 14           ~ 15 0
5 ACO 22 ClG 00 20 41.4 -25 42 39           ~ 103 0
6 ClG J0030+2618 ClG 00 30 33.6 +26 18 16           ~ 61 0
7 ACO 68 ClG 00 37 06.2 +09 09 33           ~ 186 0
8 ACO 2813 ClG 00 43 32.377 -20 35 23.51           ~ 96 0
9 ACO S 84 ClG 00 49 23.2 -29 31 33           ~ 83 0
10 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 295 0
11 ClG J0152-1358 ClG 01 52 41.3 -13 58 13           ~ 258 3
12 BAX 035.2850+19.9739 ClG 02 21 08.4 +19 58 26           ~ 11 0
13 RzCS 392 ClG 02 24 04.19 -04 13 26.6           ~ 44 0
14 ACT-CL J0232.2-4421 ClG 02 32 18.69 -44 20 41.5           ~ 110 0
15 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 359 0
16 RXC J0303.8-7752 ClG 03 03 00.0 -77 52 00           ~ 12 0
17 ClG 0302+17 ClG 03 05 19.0 +17 28 38     21.00     ~ 56 0
18 ACO 3088 ClG 03 07 02.12 -28 39 57.3           ~ 70 0
19 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 352 0
20 ACO S 520 ClG 05 16 37.40 -54 30 01.5           ~ 95 0
21 ClG J0522-3624 ClG 05 22 13.8 -36 24 49           ~ 38 0
22 ACT-CL J0532.9-3701 ClG 05 32 56.4 -37 01 34           ~ 48 0
23 ACO 3364 ClG 05 47 38.1 -31 52 15           ~ 75 0
24 ACO 3378 ClG 06 05 53.7 -35 18 06           ~ 81 1
25 ACO 3404 ClG 06 45 29.50 -54 13 37.0           ~ 96 0
26 ClG J0647+7015 ClG 06 47 50.0 +70 14 55           ~ 153 0
27 ClG J0744+3927 ClG 07 44 52.5 +39 27 30           ~ 181 0
28 ClG J0848+4456 ClG 08 48 46.9 +44 56 22           ~ 62 1
29 MCXC J0856.1+3756 ClG 08 56 13.7 +37 56 08           ~ 18 0
30 2MASS J09134545+4056282 Sy2 09 13 45.4951283928 +40 56 28.215343572   19.69 19.21     ~ 250 2
31 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 295 0
32 ACO 851 ClG 09 43 01.2 +46 59 54   18.9       ~ 327 0
33 ACO 907 ClG 09 58 21.84 -11 03 47.5           ~ 129 0
34 ClG J1003+3253 ClG 10 03 04.1 +32 54 28           ~ 29 0
35 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 400 0
36 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 284 0
37 ACO 1068 ClG 10 40 47.1 +39 57 19           ~ 214 0
38 ACO 1084 ClG 10 44 37.1 -07 04 47           ~ 74 0
39 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 454 0
40 ClG J1103+3555 ClG 11 03 37.1 +35 55 18           ~ 12 0
41 ClG J1120+4318 ClG 11 20 07.6 +43 18 07           ~ 60 0
42 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 151 0
43 ClG 1137+66 ClG 11 40 23.0 +66 08 16     21.0     ~ 138 0
44 ACO 1348 ClG 11 41 24.0 -12 16 00           ~ 66 0
45 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 430 0
46 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 246 0
47 ClG J1213+0253 ClG 12 13 34.4 +02 53 57           ~ 30 0
48 ClG J1216-1201 ClG 12 16 45.10 -12 01 17.3           ~ 68 0
49 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 215 0
50 ClG J1252-2927 ClG 12 52 54.4 -29 27 17           ~ 156 0
51 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1125 0
52 ClG J1311-0551 ClG 13 11 30.2 -05 51 26           ~ 11 0
53 ClG J1334+5031 ClG 13 34.0 +50 31           ~ 8 0
54 ACO 1763 ClG 13 35 20.1 +41 00 04           ~ 312 0
55 BAX 205.7046+40.4697 ClG 13 42 49.1 +40 28 11           ~ 21 0
56 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 548 0
57 ClG J1354-0221 ClG 13 54 16.9 -02 21 47           ~ 46 0
58 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 689 1
59 BAX 214.8479+06.6450 ClG 14 19 23.5 +06 38 42           ~ 13 0
60 BAX 214.9883+06.5739 ClG 14 19 53.830 +06 34 03.11           ~ 13 0
61 ClG J1429+4241 ClG 14 29 06.4 +42 41 10           ~ 26 0
62 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 294 0
63 ACO 2034 ClG 15 10 12.96 +33 29 53.2           ~ 215 1
64 ACO 2050 ClG 15 16 18.7 +00 05 31           ~ 113 0
65 ACO 2051 ClG 15 16 47.15 -01 00 32.8           ~ 61 0
66 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 436 0
67 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 809 1
68 ACT-CL J2014.8-2430 ClG 20 14 49.7 -24 30 30           ~ 83 0
69 ACO 2328 ClG 20 48 09.8 -17 50 14           ~ 72 0
70 ClG 2053-04 ClG 20 56 21.2 -04 37 46   21.0       ~ 165 0
71 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 271 0
72 ClG J2146+0422 ClG 21 46 04.8 +04 23 19           ~ 23 0
73 ACO 3814 ClG 21 49 07.24 -30 42 06.4           ~ 56 0
74 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 688 2
75 ACO 3827 ClG 22 01 49.1 -59 57 15           ~ 159 0
76 ACO 3856 ClG 22 18 45.2 -38 53 57           ~ 79 2
77 BAX 337.1433+20.6131 ClG 22 28 32.6 +20 37 08           ~ 117 0
78 ACO 3888 ClG 22 34 23.0 -37 43 29           ~ 138 1
79 ClG J2235-2557 ClG 22 35 20.6 -25 57 42           ~ 147 0
80 ACO 3911 ClG 22 46 22.6 -52 44 21           ~ 64 0
81 ACO 2631 ClG 23 37 40.7 +00 16 35           ~ 171 0
82 ACO 2667 ClG 23 51 39.37 -26 05 02.7           ~ 175 0
83 MCXC J2359.5-3211 ClG 23 59 35.7 -32 11 07           ~ 11 0

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