Galaxy morphology, luminosity, and environment in the SDSS DR7

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Table 2

Properties of different environmental regions.

Region	Densities^a	N _gal	N _spiral	N _ellipt.	V ^b

D1	0.0–0.8	54 942	32 963	7836	57.6
D2	0.8–2.0	173 320	86 239	36 718	29.1
D3	2.0–5.0	208 210	85 749	57 965	12.0
D4	5.0–∞	66 884	23 123	22 026	1.3

Notes.

^(a)

Densities are given in units of the global mean density (0.01526 × 10¹⁰ h L_⊙ Mpc^-3).

^(b)

Percent of the total volume.

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