GRAVITATIONAL CLUSTERING OF GALAXIES - COMPARISON BETWEEN THERMODYNAMIC THEORY AND N-BODY SIMULATIONS .3. VELOCITY DISTRIBUTIONS FOR DIFFERENT MASS COMPONENTS

被引：20

作者：

INAGAKI, S

ITOH, M

SASLAW, WC

机构：

[1] KYOTO UNIV,YUKAWA INST THEORET PHYS,UJI RES CTR,UJI,KYOTO 611,JAPAN

[2] UNIV VIRGINIA,DEPT ASTRON,CHARLOTTESVILLE,VA 22903

[3] NATL RADIO ASTRON OBSERV,CHARLOTTESVILLE,VA 22901

[4] UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 386卷 / 01期

关键词：

GALAXIES; CLUSTERING; DISTANCES AND REDSHIFTS; GRAVITATION; LARGE-SCALE STRUCTURE OF UNIVERSE; METHODS; NUMERICAL;

D O I：

10.1086/170986

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The radial velocity distribution function of galaxies as well as their three-dimensional velocity distributions predicted from the thermodynamic theory are compared with N-body simulations. We mainly consider systems with two mass components. The agreement between the thermodynamic theory and the N-body simulations is remarkably good, even for very large values of the mass ratios. When the mass ratio is large, this agreement is much better than for the spatial distribution functions. The velocity dispersion is found to be an excellent measure of the value of OMEGA(0).

引用

页码：9 / 18

页数：10

共 19 条

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