TITLE:
Nearest neighbor vector analysis of SDSS DR5 galaxy distribution
AUTHORS:
Yongfeng Wu, Weike Xiao, Rongjun Mu, David Batuski, Andre Khalil
KEYWORDS:
Nearest Neighbor Distance; Nearest Neighbor Vector; Anisotropy; SDSS DR5; Galaxy Distribution
JOURNAL NAME:
Natural Science,
Vol.5 No.1,
January
15,
2013
ABSTRACT: We present the nearest
neighbor distance (NND) analysis of SDSS DR5 galaxies. We give NND results for observed,
mock and random sample, and discuss the differences. We find the observed sample
gives us a significantly stronger aggregation
characteristic than the random samples. Moreover, we investigate the direction
of NND and find the direction has close relation with the size of the NND for the
observed sample.