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

共 5 条

[1] EINENSTEIN D, 1997, ASTROPH9709054
[2] Is there a cosmological constant?
Kochanek, CS
[J]. ASTROPHYSICAL JOURNAL, 1996, 466 (02) : 638 - 659
[3] THE OBSERVATIONAL CASE FOR A LOW-DENSITY UNIVERSE WITH A NONZERO COSMOLOGICAL CONSTANT
OSTRIKER, JP
STEINHARDT, PJ
[J]. NATURE, 1995, 377 (6550) : 600 - 602
[4] Measuring the universal deceleration using angular diameter distances to clusters of galaxies
Pen, UL
[J]. NEW ASTRONOMY, 1997, 2 (04): : 309 - 317
[5] Measurements of the cosmological parameters Omega and Lambda from the first seven supernovae at z>=0.35
Perlmutter, S
Gabi, S
Goldhaber, G
Goobar, A
Groom, DE
Hook, IM
Kim, AG
Kim, MY
Lee, JC
Pain, R
Pennypacker, CR
Small, IA
Ellis, RS
McMahon, RG
Boyle, BJ
Bunclark, PS
Carter, D
Irwin, MJ
Glazebrook, K
Newberg, HJM
Filippenko, AV
Matheson, T
Dopita, M
Couch, WJ
[J]. ASTROPHYSICAL JOURNAL, 1997, 483 (02) : 565 - 581

← 1 →