2005A&A...432..809D


Query : 2005A&A...432..809D

2005A&A...432..809D - Astronomy and Astrophysics, volume 432, 809-821 (2005/3-4)

An XMM-Newton view of the cluster of galaxies Abell 85.

DURRET F., LIMA NETO G.B. and FORMAN W.

Abstract (from CDS):

We have observed the cluster of galaxies Abell 85 with XMM-Newton. These data have allowed us in a previous paper to confirm the existence of the extended 4 Mpc filament detected by the ROSAT PSPC in the neighbourhood of this cluster, and to determine an X-ray temperature of about ∼2keV. We now present a thorough analysis of the properties of the X-ray gas in the cluster itself, including temperature and metallicity maps for the entire cluster. These results show that Abell 85 had intense merging activity in the past and is not fully relaxed, even in the central region. We have also determined the individual abundances for some iron-group metals and α-elements in various regions; the ratios of these metallicities to the iron abundance show that both supernova types Ia and II must be involved in the intra-cluster gas enrichment. Spectral analysis of the central region suggests a different redshift of the X-ray emitting gas compared to the mean cluster velocity derived from galaxy member redshifts. We discuss the implications of the difference between the cD galaxy redshift, the mean galaxy redshift and the hot gas redshift, as well as the possibility of several groups being accreted on to Abell 85. Finally, we obtain the dynamical mass profile and baryon fraction taking into account the newly determined temperature profile. The dynamical mass in Abell 85 has a steep density profile, similar to the ones found in N-body simulations.

Abstract Copyright:

Journal keyword(s): plasmas - galaxies: intergalactic medium - X-rays: galaxies: clusters - galaxies: clusters: individual: A85

Nomenclature: Table 1: [DLF2005] NN (Nos 1-17).

Simbad objects: 22

goto Full paper

goto View the references in ADS

Number of rows : 22
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 [DLF2005] 1 X 00 41 26.367 -09 22 11.48           ~ 2 0
2 [DLF2005] 2 X 00 41 29.705 -09 22 45.70           ~ 1 0
3 NVSS J004129-092240 Rad 00 41 30.2 -09 22 23           ~ 35 0
4 Ka 364 SyG 00 41 30.2986763472 -09 15 45.892857024   16.2 14.46 14.32   ~ 57 0
5 2MASS J00413650-0923387 EB* 00 41 36.4995577344 -09 23 38.893189560     13.97     ~ 4 0
6 [DLF2005] 5 X 00 41 37.273 -09 22 34.52           ~ 1 0
7 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 839 0
8 [DLF2005] 6 X 00 41 39.759 -09 23 17.72           ~ 1 0
9 [DLF2005] 7 * 00 41 40.6485656928 -09 21 19.783386504           ~ 1 0
10 [DLF2005] 8 X 00 41 40.841 -09 22 36.12           ~ 1 0
11 [DLF2005] 9 X 00 41 42.810 -09 26 25.90           ~ 1 0
12 [DLF2005] 10 X 00 41 43.242 -09 27 35.07           ~ 1 0
13 [DLF2005] 11 X 00 41 44.539 -09 28 26.27           ~ 2 0
14 [DLF2005] 12 X 00 41 46.440 -09 29 32.50           ~ 2 0
15 [BPL98] South Blob Rad 00 41 48 -09 27.5           ~ 4 0
16 [DLF2005] 13 X 00 41 48.317 -09 28 41.17           ~ 2 0
17 NVSS J004151-092548 rG 00 41 50.1734020176 -09 25 47.379587232   16.26 15.57     ~ 42 0
18 [DLF2005] 15 X 00 41 50.997 -09 28 19.25           ~ 2 0
19 [DLF2005] 16 X 00 41 53.165 -09 25 05.71           ~ 1 0
20 [DLF2005] 17 X 00 41 57.490 -09 24 40.10           ~ 2 0
21 ACO 87 ClG 00 43 01 -09 47.6           ~ 45 0
22 ACO 89 ClG 00 43 07.7 -09 26 34           ~ 21 0

To bookmark this query, right click on this link: simbad:objects in 2005A&A...432..809D and select 'bookmark this link' or equivalent in the popup menu


2022.05.20-01:10:58

© Université de Strasbourg/CNRS

    • Contact