Nearest neighbor vector analysis of SDSS DR5 galaxy distribution - Natural Science

NS > Vol.5 No.1, January 2013

Natural Science

Volume 5, Issue 1 (January 2013)

ISSN Print: 2150-4091 ISSN Online: 2150-4105

Google-based Impact Factor: 0.74 Citations h5-index & Ranking

Nearest neighbor vector analysis of SDSS DR5 galaxy distribution ()

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DOI: 10.4236/ns.2013.51008 3,916 Downloads 5,621 Views

Author(s)

Yongfeng Wu, Weike Xiao, Rongjun Mu, David Batuski, Andre Khalil

Affiliation(s)

4Department of Mathematics, University of Maine, Orono, USA.
American Physical Society, Maryland, USA;.
Department of Astronautics Engineering, Harbin Institute of Technology, Harbin, China.
Department of Physics, University of Maine, Orono, USA.

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.

KEYWORDS

Nearest Neighbor Distance; Nearest Neighbor Vector; Anisotropy; SDSS DR5; Galaxy Distribution

Share and Cite:

Wu, Y. , Xiao, W. , Mu, R. , Batuski, D. and Khalil, A. (2013) Nearest neighbor vector analysis of SDSS DR5 galaxy distribution. Natural Science, 5, 47-51. doi: 10.4236/ns.2013.51008.

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