Statistics
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ap%26ss.314..177a&link_type=abstract
Astrophysics and Space Science, Volume 314, Issue 1-3, pp. 177-191
Statistics
4
Galaxies: Evolution, Galaxies: Formation, Galaxies: Statistics, Galaxies: Clusters: General
Scientific paper
We study the spatial orientation of 5 169 galaxies that have radial velocity 3 000 to 5 000 km s-1. The ‘position angle inclination’ method is used to find the spin vector and the projections of spin vector of the galaxy rotation axes. The spatial isotropic distribution is assumed to examine the non-random effects. For this, we have performed chi-square, Fourier, and auto-correlation tests. We found a random alignment of spin vectors of total galaxies with respect to the equatorial coordinate system. The spin vector projections of total galaxies is found to be oriented tangentially with respect to the equatorial center. The spiral galaxies show a similar orientation as shown by the total sample. Five subsamples of barred spiral (late-type) galaxies show a preferred alignment. However, early-type barred spirals show a random orientation. A weak morphological dependence is noticed in the subsamples of late type barred spirals. A comparison with the previous works and the possible explanation of the results will be presented.
Aryal Bijaya
Neupane D.
Saurer W.
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