GLOBULAR CLUSTERS AND VIRGO CLUSTER DISTANCE MODULUS

被引：76

作者：

HANES, DA ^{[1
]}

机构：

[1] UNIV TORONTO,DAVID DUNLAP OBSERV,TORONTO,ONTARIO,CANADA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1977年 / 180卷 / 02期

关键词：

Astrophysics - NASA - Normal distribution - Uncertainty analysis;

D O I：

10.1093/mnras/180.3.309

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Photometry presented by Hanes for the globular clusters associated with 20 bright galaxies in the Virgo cluster is used in an evaluation of a pure Population II distance modulus for the Virgo cluster of galaxies. The assumption of a normally distributed universal globular cluster luminosity function, calibrated in the Galaxy sample of globulars and based upon an absolute magnitude of MV = 0.6 mag for RR Lyrae stars in globular clusters, leads to Virgo cluster distance modulus estimates near (m-M)app =30.4 mag, with an uncertainty of ± 0.5 mag. Confirmation of a model-independent nature is presented. © 1977 Royal Astronomical Society. Provided by the NASA Astrophysics Data System.

引用

页码：309 / 321

页数：13

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