UBV PHOTOMETRY OF RR-LYRAE VARIABLES IN THE GLOBULAR-CLUSTER NGC-6121 (M4)

被引:44
|
作者
CACCIARI, C
机构
来源
ASTRONOMICAL JOURNAL | 1979年 / 84卷 / 10期
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D O I
10.1086/112572
中图分类号
P1 [天文学];
学科分类号
0704 ;
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页码:1542 / 1552
页数:11
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