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The Properties of Isolated Main Galaxies in Sloan Digital Sky Survey Data Release 3 (SDSS DR3)

Published online by Cambridge University Press:  05 March 2013

Xinfa Deng ,
Xinsheng Ma ,
Chenghong Luo ,
Qun Zhang ,
Qing-Hua Liao  and
Ji-zhou He
Xinfa Deng*
Affiliation:
Mathematics and Physics College, Nanchang University, Jiangxi 330047, China
Xinsheng Ma
Affiliation:
Mathematics and Physics College, Nanchang University, Jiangxi 330047, China
Chenghong Luo
Affiliation:
Mathematics and Physics College, Nanchang University, Jiangxi 330047, China
Qun Zhang
Affiliation:
Mathematics and Physics College, Nanchang University, Jiangxi 330047, China
Qing-Hua Liao
Affiliation:
Mathematics and Physics College, Nanchang University, Jiangxi 330047, China
Ji-zhou He
Affiliation:
Mathematics and Physics College, Nanchang University, Jiangxi 330047, China
*
BCorresponding author. E-mail: xinfadeng@163.com
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Abstract

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We have constructed a Main galaxy subsample of 67777 galaxies with redshifts in the range 0.08 ≤ z ≤ 0.12 from the Sloan Digital Sky Survey Data Release 3. Using cluster analysis, two isolated Main galaxy samples were extracted from this subsample. The two isolated Main galaxy samples identified at different radii have the same properties. Additionally, we find fewer early-type galaxies in isolated Main galaxy samples than in a close double galaxy sample.

Keywords

cosmologygalaxycluster analysis
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 23 , Issue 2 , 2006 , pp. 76 - 81
Copyright
Copyright © Astronomical Society of Australia 2006

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