2001ApJ...563..673T

Query : 2001ApJ...563..673T

2001ApJ...563..673T - Astrophys. J., 563, 673-686 (2001/December-3)

A filament between galaxy clusters A3391 and A3395.

TITTLEY E.R. and HENRIKSEN M.

Abstract (from CDS):

Filamentary gas spanning the region between the galaxy clusters Abell 3391 and Abell 3395 has been detected using ASCA and ROSAT archived data. The gas has a minimum flux of 1.3x10–12 ergs.cm–2.s–1 (0.8-10 keV). Within this filament resides a galaxy group for which a flux of (2.0±0.3)x10–13 ergs. cm–2.s–1 (0.8-10 keV) is determined. An analysis using ray-tracing determines light scattered into the filamentary region contributes 13% of the count rate. The structure in which the filamentary gas resides is postulated to be a filament aligned nearly lengthwise with the line of sight. Identification of this structure as a filament is based on the angular and redshift distribution of surrounding galaxies and clusters. The distribution is compatible with the structure being a quasi-linear structure tilted to the line of sight such that the ratio of the depth to the tangential distance is between 6:1 and 18:1. The filamentary gas contains on the order of 1013 M☉ of gas, which is close to 2% of the total mass of the system.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Clusters: Individual: Alphanumeric: A3391 - Galaxies: Clusters: Individual: Alphanumeric: A3395 - Cosmology: Large-Scale Structure of Universe - X-Rays: Diffuse Background - X-Rays: Galaxies: Clusters

Nomenclature: Table 1: [TH2001] A (Nos A-H). Figs 2-3, Table 1: [TH2001] A3395 WW (Nos NW, E, SW).

Simbad objects: 19

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Number of rows : 19
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 ACO 3380 ClG 06 06 57 -49 29.5           ~ 21 2
3 PKS 0620-526 rG 06 21 43.30328 -52 41 33.2978     15.5 19.34   ~ 92 1
4 ACO S 584 ClG 06 22 57 -53 35.6           ~ 4 0
5 * alf Car * 06 23 57.10988 -52 41 44.3810 -0.49 -0.59 -0.74 -0.96 -1.13 A9II 461 1
6 ESO 161-5 IG 06 25 15.6 -55 21 12   16.66 17.5 14.41   ~ 9 0
7 BAX 096.3152-55.3534 ClG 06 25 16.350 -55 21 04.24           ~ 13 0
8 ESO 161-6 IG 06 26 05.3 -54 02 03           ~ 10 0
9 NAME ESO 161-6 Group GrG 06 26.1 -54 02           ~ 1 0
10 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 222 1
11 [TH2001] F ClG 06 26.6 -54 20           ~ 4 1
12 BAX 096.7000-54.5453 ClG 06 26 45.2 -54 32 33           ~ 7 1
13 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 229 0
14 [TH2001] G X 06 27.6 -54 27           ~ 1 1
15 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
16 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 159 0
17 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
18 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
19 ACO 2125 ClG 15 41 14.1 +66 15 57           ~ 124 1

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