Analytical fit to the luminosity distance for flat cosmologies with a cosmological constant

被引：82

作者：

Pen, UL ^{[1
]}

机构：

[1] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 1999年 / 120卷 / 01期

关键词：

cosmology; theory; distance scale;

D O I：

10.1086/313167

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a fitting formula for the luminosity and angular diameter distances in cosmological models with pressureless matter, a cosmological constant, and zero spatial curvature. The formula has a relative error of less than 0.4% for 0.2 < Omega(0) < 1 for any redshift and a global relative error of less than 4% for any choice of parameters.

引用

页码：49 / 50

页数：2

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