Median Statistics and the Hubble Constant

被引：131

作者：

Chen, Gang ^{[1
]}

Ratra, Bharat ^{[2
]}

机构：

[1] Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China

[2] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC | 2011年 / 123卷 / 907期

基金：

美国国家科学基金会;

关键词：

CONSTRAINTS; IA;

D O I：

10.1086/662131

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Following Gott et al., we use Huchra's final compilation of 553 measurements of the Hubble constant (H-0) to estimate median statistical constraints on H-0. Our median statistical analysis yields H-0 = 68 +/- 5.5 (or +/- 1) kms(-1) Mpc(-1), where the errors are the 95% statistical and systematic (or statistical) errors. These results are close to what Gott et al. found a decade ago, with smaller statistical errors and similar systematic errors. With about two-thirds more measurements, we are also able to clearly illustrate the presence and magnitude of systematic errors for different methods.

引用

页码：1127 / 1132

页数：6

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