2013MNRAS.433.2790L

Query : 2013MNRAS.433.2790L

2013MNRAS.433.2790L - Mon. Not. R. Astron. Soc., 433, 2790-2811 (2013/August-3)

Chandra measurements of a complete sample of X-ray luminous galaxy clusters: the gas mass fraction.

LANDRY D., BONAMENTE M., GILES P., MAUGHAN B., JOY M. and MURRAY S.

Abstract (from CDS):

We present Chandra X-ray measurements of the gas mass fraction out to r500 for a complete sample of the 35 most luminous clusters from the Brightest Cluster Sample and the Extended Brightest Cluster Sample at redshift z = 0.15-0.30. The sample includes relaxed and unrelaxed clusters, and the data were analysed independently using two pipelines and two different models for the gas density and temperature. We measure an average of fgas(r500) = 0.163±0.032, which is in agreement with the cosmic baryon fraction (Ωb/ΩM = 0.167±0.006) at the 1σ level, after adding the stellar baryon fraction. Earlier studies reported gas mass fractions significantly lower than the cosmic baryon fraction at r500, and in some cases higher values that are consistent with the cosmic baryon fraction towards the virial radius. In this paper, we show that the most X-ray luminous clusters in the redshift range z = 0.15-0.30 have a gas mass fraction that is consistent with the cosmic value at r500.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: intracluster medium - large-scale structure of Universe - X-rays: galaxies: clusters

Simbad objects: 39

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Number of rows : 39
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 68 ClG 00 37 06.2 +09 09 33           ~ 195 0
2 ACO 115 ClG 00 55 59 +26 23.2           ~ 295 1
3 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 391 1
4 ACO 267 ClG 01 52 43.016 +00 59 58.90           ~ 241 0
5 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 389 0
6 ACT-CL J0437.1+0043 ClG 04 37 12.0820 +00 43 37.737           ~ 47 0
7 ACT-CL J0438.9+0716 ClG 04 39 00.7 +07 15 45           ~ 62 0
8 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
9 ACO 586 ClG 07 32 20.3 +31 37 58           ~ 196 0
10 ACO 611 ClG 08 00 58.7 +36 02 49           ~ 275 0
11 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
12 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
13 ZwCl 0857+2107 ClG 09 00 36.90 +20 53 40.3           ~ 103 0
14 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 308 0
15 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 167 0
16 ACO 907 ClG 09 58 21.84 -11 03 47.5           ~ 137 0
17 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 414 0
18 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6 17.95     ~ 297 0
19 ACO 1413 ClG 11 55 12.87 +23 23 46.9           ~ 456 0
20 ACO 1423 ClG 11 57 17.3206 +33 36 39.364           ~ 181 0
21 ZwCl 1231+1007 ClG 12 34 21.9 +09 47 02           ~ 72 0
22 ACO 1576 ClG 12 36 59.5 +63 11 18           ~ 116 0
23 ACO 1682 ClG 13 06 49.7 +46 32 59           ~ 149 1
24 ZwCl 1309+2216 ClG 13 11.5 +22 00           ~ 26 0
25 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 266 2
26 ACO 1763 ClG 13 35 20.1 +41 00 04           ~ 335 0
27 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
28 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
29 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62 20.04   ~ 309 0
30 ZwCl 1459+4240 ClG 15 01 23.0 +42 20 47           ~ 61 0
31 ACO 2111 ClG 15 39 40.9 +34 25 04           ~ 188 0
32 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
33 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
34 ClG J1720+2638 ClG 17 20 09.6 +26 37 35           ~ 284 0
35 ACO 2261 ClG 17 22 26.9 +32 07 58           ~ 370 0
36 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 308 0
37 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
38 ACO 2552 ClG 23 11 31.7 +03 37 44           ~ 87 0
39 ACO 2631 ClG 23 37 40.7 +00 16 35           ~ 183 0

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