CONSTRAINTS ON THE UNIVERSE WITH A DECAYING COSMOLOGICAL CONSTANT FROM A NUMBER COUNT OF FAINT GALAXIES

被引：15

作者：

YOSHII, Y ^{[1
]}

SATO, K ^{[1
]}

机构：

[1] UNIV TOKYO,FAC SCI,DEPT PHYS,TOKYO 113,JAPAN

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 387卷 / 01期

关键词：

COSMOLOGY; OBSERVATIONS; THEORY; GALAXIES; PHOTOMETRY;

D O I：

10.1086/186293

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Cosmological parameters of a spatially flat universe with a decaying cosmological constant-LAMBDA that is proposed by Peebles and Ratra are constrained from recent observations of number count of faint galaxies in the blue and near-infrared passbands. We determine possible combinations of density parameter OMEGA-0 and the index alpha which controls the decaying rate of LAMBDA. It is found that the number count data indicate OMEGA-0 = 0.3-0.5 for a possible range of alpha, and that the high-density OMEGA-0 = 1 universe with zero space curvature is strongly disfavored by these data.

引用

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页码：L7 / L11

页数：5

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