Variable stars in the Fornax dwarf galaxy

被引：68

作者：

Bersier, D

Wood, PR

机构：

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

[2] Australian Natl Univ, Mt Stromlo Observ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia

来源：

ASTRONOMICAL JOURNAL | 2002年 / 123卷 / 02期

关键词：

distance scale; galaxies : individual (Fornax); RR Lyrae variable; stars : variables : general;

D O I：

10.1086/338315

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search for variable stars in the Fornax dwarf galaxy covering an area of half a square degree. We have similar to30 epochs of VI data. We found and determined periods for more than 500 RR Lyrae, 17 anomalous Cepheids, and six Population II Cepheids. In addition we have 85 candidate long-period variables, the majority of which were previously unknown. We estimate that the average metal abundance of RR Lyrae stars is [Fe/H]similar or equal to-1.6 dex.

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页码：840 / 847

页数：8

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