2017MNRAS.471.1370S

Query : 2017MNRAS.471.1370S

2017MNRAS.471.1370S - Mon. Not. R. Astron. Soc., 471, 1370-1389 (2017/October-3)

HICOSMO: cosmology with a complete sample of galaxy clusters - II. Cosmological results.

SCHELLENBERGER G. and REIPRICH T.H.

Abstract (from CDS):

The X-ray bright, hot gas in the potential well of a galaxy cluster enables systematic X-ray studies of samples of galaxy clusters to constrain cosmological parameters. HIFLUGCS consists of the 64 X-ray brightest galaxy clusters in the Universe, building up a local sample. Here, we utilize this sample to determine, for the first time, individual hydrostatic mass estimates for all the clusters of the sample and, by making use of the completeness of the sample, we quantify constraints on the two interesting cosmological parameters, Ωm and σ8. We apply our total hydrostatic and gas mass estimates from the X-ray analysis to a Bayesian cosmological likelihood analysis and leave several parameters free to be constrained. We find Ωm = 0.30 ± 0.01 and σ8 = 0.79 ± 0.03 (statistical uncertainties, 68 per cent credibility level) using our default analysis strategy combining both a mass function analysis and the gas mass fraction results. The main sources of biases that we correct here are (1) the influence of galaxy groups (incompleteness in parent samples and differing behaviour of the Lx-M relation), (2) the hydrostatic mass bias, (3) the extrapolation of the total mass (comparing various methods), (4) the theoretical halo mass function and (5) other physical effects (non-negligible neutrino mass). We find that galaxy groups introduce a strong bias, since their number density seems to be over predicted by the halo mass function. On the other hand, incorporating baryonic effects does not result in a significant change in the constraints. The total (uncorrected) systematic uncertainties (∼20 per cent) clearly dominate the statistical uncertainties on cosmological parameters for our sample.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): galaxies: clusters: intracluster medium - cosmological parameters - large-scale structure of Universe - cosmology: observations - X-rays: galaxies: clusters - 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 - 2026 		#notes
1 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
2 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 577 2
3 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 391 1
4 NGC 507 rG 01 23 39.950 +33 15 22.22   13.0       ~ 459 1
5 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
6 ACO 400 ClG 02 57 37.4 +06 00 45           ~ 408 3
7 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 420 0
8 ACO 401 ClG 02 58 50.3 +13 34 07           ~ 592 0
9 ACO 3112 ClG 03 17 52.9 -44 15 06           ~ 329 1
10 NGC 1399 rG 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1636 1
11 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 402 1
12 2MASX J03411752+1523477 BiC 03 41 17.5329189192 +15 23 47.567775336   17.5       ~ 46 1
13 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
14 ACO 478 ClG 04 13 24.8 +10 27 52           ~ 522 0
15 NGC 1550 BiC 04 19 37.9450450152 +02 24 35.918168940   14.0       ~ 183 1
16 ClG 0422-09 ClG 04 25 51.02 -08 33 38.5           ~ 97 0
17 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
18 ACO 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
19 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
20 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 222 1
21 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 229 0
22 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 312 1
23 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
24 MCG-02-24-007 LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1077 1
25 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 905 1
26 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
27 NAME NGC 4073 Group GrG 12 04 44.08 +01 48 40.9     13.53     ~ 292 0
28 ZwCl 1215+0400 ClG 12 17 43.62 +03 38 51.5           ~ 169 0
29 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
30 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
31 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
32 ACO 1650 ClG 12 58 42.0 -01 45 45           ~ 325 0
33 ACO 1651 ClG 12 59 27.3 -04 10 49           ~ 307 0
34 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
35 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
36 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 268 2
37 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
38 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
39 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
40 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
41 ACO 3581 ClG 14 07 29.8 -27 01 04           ~ 197 3
42 BAX 220.1796+03.4530 ClG 14 40 34.37 +03 29 49.7     14.31     ~ 131 0
43 ClG J1504-0248 ClG 15 04 07.4 -02 48 15           ~ 186 0
44 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
45 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 756 1
46 ACT-CL J1521.8+0742 ClG 15 21 48.8 +07 43 41     15.13     ~ 326 0
47 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
48 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
49 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
50 ACO 2147 ClG 16 02 11.96 +15 55 11.5           ~ 416 0
51 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
52 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
53 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
54 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 301 0
55 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
56 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
57 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
58 ACO S 1101 ClG 23 13 58.5 -42 43 39           ~ 272 1
59 ACO 2589 ClG 23 24 00.5 +16 49 29           ~ 327 1
60 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 572 0
61 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2
62 ACO 2657 ClG 23 44 51.0 +09 08 40           ~ 280 3
63 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3
64 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1

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