Coexistence of chiral symmetry restoration and random orientation of galaxies

Abstract

We studied the chiral symmetry restoration and the spatial orientation of 2288 spiral and spiral barred galaxies that have radial velocities (RV) less than 5000 km s −1 . A random direction of the rotation of galaxies is assumed in order to classify the structural modes. The distribution of spin vector and spin vector projections of leading and trailing arm galaxies in the total sample and subsamples are studied. We use chi-square, auto-correlation and Fourier tests in order to discriminate the preferred alignments from the random alignments. A good correlation between the random alignment and the chiral symmetry is noticed in the Local Supercluster (RV < 3000 km s −1 ) and in galaxies nearby the Local Supercluster (3000 < RV (km s −1 ) ≤ 5000). Spiral galaxies show a similar result. The barred spirals show an opposite trend to that observed for the spirals. Nearby the Local Supercluster, we noticed a preferred spatial alignment and non-chiral property in the leading and trailing arm spiral barred galaxies. Our result predicts that the progressive loss of chirality might have some connection with the rotationally supported (spirals, barred spirals) and randomized (lenticulars, ellipticals) systems. Thus, we suspect that the dynamical processes in the cluster evolution give rise to a dynamical loss of chirality.

A Study of R-Magnitude Dependence in Spatial Orientation of Spin Vectors of SDSS DR-7 Galaxies of Redshift 0.10 < Z < 0.11

“…In general, our results support Hierarchy model. The spatial orientation of galaxies in 117 clusters were studied till date 12,13,14,15,16,17,18,19,20,21 . In most cases no preferred alignment is noticed (Hierarchy model).…”

Spatial Orientation of Galaxies in Supercluster S[195+027+0022]

“…Here we describe the procedure for the removal the selection effects to obtain the isotropic distributions for both and as given by Aryal & Saurer [1][2][3][4][5][6][7]. Theoretically, the isotropic distribution curve for polar angle is cosine and that for azimuthal angle is the average distribution curve, with the restriction that the database is free from selection effect.…”

A Study of co-existence between the Hubble flow and the random alignments of spin vectors of SDSS galaxies

“…Godlowski et al (2003) showed that Li model predicts the existence of a vanishing angular momentum [8]. Their prediction was observationally tested by several authors [9][10][11][12][13][14][15][16][17][18] and found the vanishing angular momenta for less massive structures (galaxy groups, poor galaxy clusters, etc) and non-vanshing angular momenta for larger structures (compact groups, rich galaxy clusters, etc). Therefore, it is essential to probe the angular momenta of galaxy clusters directly based on dynamical analysis.…”