Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-11-15
Astronomy and Astrophysics
Astrophysics
10 pages, 10 figures
Scientific paper
We have constructed a Main galaxy subsample with redshifts in the range 0.08<=z<=0.12 from SDSS Data Release 3 (SDSS DR3), and refer to this subsample as "MGSU"(It contains 67777 galaxies). By cluster analysis, two isolated Main galaxy samples are extracted from this subsample. It turns out that two isolated Main galaxy samples identified at different radii have the same properties. Additionally, we also find that early-type galaxies in isolated Main galaxy samples are fewer than that in close double galaxy sample.
Chenghong Luo
Ji-zhou He
Qun Zhang
Xinfa Deng
Xinsheng Ma
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