2009ApJ...690..879S

Query : 2009ApJ...690..879S

2009ApJ...690..879S - Astrophys. J., 690, 879-890 (2009/January-1)

A low-redshift galaxy cluster X-ray temperature function incorporating Suzaku data.

SHANG C. and SCHARF C.

Abstract (from CDS):

We present the first results of a survey of 14 low-redshift galaxy clusters using Suzaku. Although luminous (Lx> 1x1043 erg/s (0.1-2.4 keV)), these clusters have no prior pointed X-ray data. Together with 47 other systems they form a flux-limited sample (fx> 1.0x10–11 erg/s/cm2 (0.1-2.4 keV)) with z ≤ 0.1 in the northern celestial hemisphere. Using this total sample, we evaluate the local L-T relationship and the local cluster temperature function. Suzaku temperature measurements appear to be in accord with those of other missions. General agreement is found with other published estimates of the low-redshift cluster temperature function; however, the sample used here exhibits slightly lower space densities at gas temperatures below 4-5 keV. We find a corresponding deficit in the number of clusters with temperatures between approximately 4.5 and 5.5 keV. Although at low significance, a similar feature exists in previous low-redshift cluster data sets. We suggest that low-redshift cluster samples, while crucial for calibrating precision cosmology measurements, must be used with caution due to their limited size and susceptibility to the effects of cosmic variance.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - intergalactic medium - X-rays: galaxies: clusters

Simbad objects: 64

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Number of rows : 64
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 76 ClG 00 40 16.1031 +06 52 46.226           ~ 132 2
2 ZwCl 0040+2404 ClG 00 43 52.0 +24 24 21     17.2     ~ 37 0
3 ACO 168 ClG 01 15 07.58 +00 19 10.8           ~ 361 2
4 ZwCl 0120+3300 ClG 01 23 36.9 +33 15 03           ~ 78 0
5 NGC 507 BiC 01 23 39.950 +33 15 22.22   13.0       ~ 440 3
6 ACO 193 ClG 01 25 07.3 +08 41 36           ~ 186 0
7 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 699 1
8 ACO 272 ClG 01 55 19.1 +33 56 41           ~ 59 0
9 ACO 376 ClG 02 45 48 +36 51.6           B8.5 153 1
10 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 399 3
11 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 396 0
12 ACO 401 ClG 02 58 56.9 +13 34 56           ~ 566 0
13 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 383 1
14 BAX 055.3242+15.3961 ClG 03 41 16.9 +15 24 27           ~ 40 0
15 ACO 478 ClG 04 13 20.7 +10 28 35           ~ 502 0
16 BAX 064.9080+02.4099 GrG 04 19 38.2 +02 25 12           ~ 42 1
17 ACO 566 ClG 07 04 37.5 +63 18 39           ~ 66 0
18 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 297 1
19 BAX 115.2425+55.4275 ClG 07 40 59.4 +55 25 55           ~ 30 0
20 MCXC J0751.3+5012 ClG 07 51 24.61 +50 15 00.6           ~ 31 0
21 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 840 1
22 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1077 1
23 ZwCl 1201+0205 ClG 12 04 27.1 +01 53 46           ~ 5 0
24 ZwCl 1215+0400 ClG 12 17 43.62 +03 38 51.5           ~ 153 0
25 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6647 0
26 ACO 1589 ClG 12 41 08.09 +18 33 18.5           ~ 103 0
27 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4804 2
28 ACO 1767 ClG 13 36 06.92 +59 10 34.3           ~ 172 0
29 ACO 1775 ClG 13 41 50.60 +26 21 10.6           ~ 304 0
30 ACO 1795 ClG 13 48 50.48 +26 35 07.4           ~ 1267 0
31 ACO 1800 ClG 13 49 27.19 +28 04 44.6           ~ 116 0
32 ACO 1831 ClG 13 59 19.42 +27 58 08.2           ~ 154 0
33 BAX 220.1796+03.4530 ClG 14 40 34.37 +03 29 49.7     14.31     ~ 119 0
34 ACO 2029 ClG 15 10 56.2 +05 44 42           ~ 943 0
35 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 730 1
36 ACO 2061 ClG 15 21 19.90 +30 37 13.0           ~ 191 1
37 ACT-CL J1521.8+0742 ClG 15 21 55.14 +07 41 27.2     15.13     ~ 311 0
38 ACO 2065 ClG 15 22 29.3 +27 42 22           ~ 374 0
39 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 398 2
40 ACO 2107 ClG 15 39 39.04 +21 46 57.8           ~ 253 0
41 ACO 2142 ClG 15 58 14.38 +27 12 57.8           ~ 768 0
42 ACO 2147 ClG 16 02 11.96 +15 55 11.5           ~ 404 0
43 AWM 4 ClG 16 04 52.01 +23 56 26.9     14.38     ~ 130 0
44 ACO 2151 ClG 16 05 15.0 +17 44 55           ~ 578 3
45 ACO 2199 ClG 16 28 43.31 +39 34 07.6           ~ 1172 1
46 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 809 1
47 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 281 0
48 ACO 2256 ClG 17 03 09.4 +78 39 36           ~ 885 1
49 ACO 2249 ClG 17 09 36.76 +34 28 04.1           ~ 120 0
50 ACO 2255 ClG 17 12 50.04 +64 03 10.6           ~ 568 0
51 NAME NGC 6338 Group GrG 17 15 32.47 +57 25 19.0           ~ 89 0
52 ZwCl 1728+4353 ClG 17 33 00.0 +43 45 00           ~ 38 0
53 ZwCl 1742+3306 ClG 17 44 16.2753 +32 59 55.115           ~ 80 0
54 ZW II 108 BiC 21 13 55.918 +02 33 55.39   15.1       ~ 62 1
55 ACO 2495 ClG 22 50 17.10 +10 55 01.2           ~ 77 0
56 ZwCl 2307+0713 ClG 23 10 26.6 +07 35 13           ~ 55 0
57 BAX 349.3187+18.7197 ClG 23 17 11.184 +18 41 48.87           ~ 91 0
58 ACO 2572 ClG 23 18 31.2 +18 41 52           ~ 140 1
59 ACO 2589 ClG 23 24 00.5 +16 49 29           ~ 316 1
60 ACO 2593 ClG 23 24 27.15 +14 33 40.2           ~ 218 0
61 ACO 2626 ClG 23 36 31.0 +21 09 36           ~ 247 0
62 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 503 2
63 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 269 3
64 ACO 2665 ClG 23 50 50.6 +06 09 00           ~ 99 0

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