2006A&A...458..357A


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.17CEST19:55:26

2006A&A...458..357A - Astronomy and Astrophysics, volume 458, 357-367 (2006/11-1)

Spatial orientation of galaxies in the core of the Shapley concentration - the cluster Abell 3558.

ARYAL B., KANDEL S.M. and SAURER W.

Abstract (from CDS):

We present an analysis of the spatial orientations of 323 galaxies in the cluster Abell 3558. Our aim is to examine non-random effects in galaxy orientations in the subsample of the cluster. The ``position angle-inclination'' method is used to find the three-dimensional rotation axes. To check for anisotropy or isotropy we carried out three statistical tests: Fourier, Kolmogorov-Smirnov, and Kuiper-V. We assumed a spatially isotropic distribution to examine non-random effects. The galaxies found in the investigated cluster region show isotropy in both two- and three-dimensional analyses of the galactic coordinate system. In addition, it is found that the overall isotropic appearance cannot be maintained when looking at the subsamples. The low radial-velocity galaxies in A3558 showed anisotropy in both two- and three-dimensional analyses. A weak anisotropy is noticed in the hard X-ray emission region. Few subsamples shows similar alignments with respect to both the galactic and Supergalactic coordinate systems. We offer possible explanations of these anisotropies.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: evolution - galaxies: spiral - galaxies: distances and redshifts - galaxies: formation - galaxies: statistics

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6054 0
2 NAME LOCAL SUPERCL SCG 12 31 +12.4           ~ 470 0
3 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4361 2
4 NAME SHAPLEY-CENTAURUS CL SCG 13 06.0 -33 04           ~ 527 0
5 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 141 0
6 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 413 2
7 [BZM96] 8 ClG 13 29 47 -31 36.5           ~ 59 1
8 BAX 202.9000-31.8128 ClG 13 31 36 -31 48.8           ~ 69 1
9 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 291 1

    Equat.    Gal    SGal    Ecl

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2021.06.17-19:55:26

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