2016A&A...585A.130H


Query : 2016A&A...585A.130H

2016A&A...585A.130H - Astronomy and Astrophysics, volume 585A, 130-130 (2016/1-1)

Thermodynamic perturbations in the X-ray halo of 33 clusters of galaxies observed with Chandra ACIS.

HOFMANN F., SANDERS J.S., NANDRA K., CLERC N. and GASPARI M.

Abstract (from CDS):

In high-resolution X-ray observations of the hot plasma in clusters of galaxies, significant structures caused by AGN feedback, mergers, and turbulence can be detected. Many clusters have been observed by Chandra in great depth and at high resolution. With the use of archival data taken with the Chandra ACIS instrument, the aim was to study thermodynamic perturbations of the X-ray emitting plasma and to apply this to better understand the thermodynamic and dynamic state of the intracluster medium (ICM). We analysed deep observations for a sample of 33 clusters with more than 100ks of Chandra exposure each at distances between redshift 0.025 and 0.45. The combined exposure of the sample is 8Ms. Fitting emission models to different regions of the extended X-ray emission, we searched for perturbations in density, temperature, pressure, and entropy of the hot plasma. For individual clusters, we mapped the thermodynamic properties of the ICM and measured their spread in circular concentric annuli. Comparing the spread of different gas quantities to high-resolution 3D hydrodynamic simulations, we constrained the average Mach number regime of the sample to Mach1D≃0.16±0.07. In addition we found a tight correlation between metallicity, temperature, and redshift with an average metallicity of Z≃0.3±0.1Z. This study provides detailed perturbation measurements for a large sample of clusters that can be used to study turbulence and make predictions for future X-ray observatories like eROSITA, Astro-H, and Athena.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - X-rays: galaxies: clusters - turbulence

VizieR on-line data: <Available at CDS (J/A+A/585/A130): table1.dat images/* tables/*>

Errata: erratum vol. 608, art. C1 (2017)

Simbad objects: 40

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Number of rows : 40
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 652 0
2 ACO 401 ClG 02 58 56.9 +13 34 56           ~ 540 0
3 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6371 1
4 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2104 1
5 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 358 1
6 ACO 496 ClG 04 33 30.3838 -13 14 21.584           ~ 671 2
7 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 228 0
8 ACO 520 ClG 04 54 19.0 +02 56 49           ~ 406 0
9 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 873 1
10 ZwCl 0735+7421 ClG 07 41 40.3 +74 14 58     17.70     ~ 236 0
11 ClG 0745-19 ClG 07 47 31.3 -19 17 40           ~ 366 0
12 2MASX J07473129-1917403 BiC 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 399 1
13 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 417 0
14 NAME Hya A LIN 09 18 05.6783347248 -12 05 43.634531472   14.38 14.8     ~ 961 1
15 ACO 907 ClG 09 58 21.84 -11 03 47.5           ~ 122 0
16 ZwCl 1021+0426 ClG 10 23 39.0 +04 11 14   15.6       ~ 264 0
17 ACO 1413 ClG 11 55 18.0 +23 24 19           ~ 400 0
18 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6287 0
19 ACO 1650 ClG 12 58 36.76 -01 43 34.2           ~ 280 0
20 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4527 2
21 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1072 0
22 ACO 1775 ClG 13 41 55.6 +26 21 53           ~ 285 0
23 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 509 0
24 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1205 0
25 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 657 1
26 ACO 1995 ClG 14 52 55.0 +58 02 59           ~ 122 0
27 ZwCl 1455+2232 ClG 14 57 15.2 +22 20 30     18.62     ~ 274 0
28 ACO 2034 ClG 15 10 10.80 +33 30 21.6           ~ 191 1
29 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 703 1
30 ACO 2146 ClG 15 56 04.7 +66 20 24           ~ 158 0
31 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1131 1
32 3C 338.0 QSO 16 28 38.2446374616 +39 33 04.235250060   12.78 11.78     ~ 729 5
33 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 415 0
34 NAME Hercules A rG 16 51 07.9886687784 +04 59 35.547131472     18.25     ~ 448 1
35 NAME Hercules A Cluster ClG 16 51 10.0 +04 59 46           ~ 45 0
36 NAME Cyg A Cluster ClG 19 59 30.3 +40 44 11           ~ 134 0
37 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 591 1
38 ACO 2390 ClG 21 53 34.6 +17 40 11           ~ 652 2
39 ACO S 1101 ClG 23 13 58.5 -42 43 39           ~ 243 1
40 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 519 0

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2022.08.09-22:09:30

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