DISCOVERY OF 17 VARIABLE-STARS IN THE OLD OPEN CLUSTER NGC-6791

被引：35

作者：

KALUZNY, J

RUCINSKI, SM

机构：

[1] YORK UNIV,INST SPACE & TERR SCI,N YORK M3J 1P3,ONTARIO,CANADA

[2] YORK UNIV,DEPT PHYS & ASTRON,N YORK M3J 1P3,ONTARIO,CANADA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1993年 / 265卷 / 01期

关键词：

BINARIES; CLOSE; STARS; VARIABLES; OTHER; OPEN CLUSTERS AND ASSOCIATIONS; INDIVIDUAL; NGC-6791;

D O I：

10.1093/mnras/265.1.34

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report results of photometric monitoring of the NGC 6791 field in V and B on four nights. We discovered eight contact binaries and nine other variables. with the majority of the latter (which are probably also binaries) observed in the region of the turn-off point of the cluster. The contact binaries seem to exhibit various stages of evolution, but two of them are blue stragglers. One of the variables is probably a binary composed of a red dwarf and a hot subdwarf.

引用

页码：34 / 42

页数：9

共 19 条

[1]

BOND HE, 1989, IAU S, V131, P251

[2] CONSTRAINTS FOR CATACLYSMIC BINARY EVOLUTION AS DERIVED FROM SPACE DISTRIBUTIONS [J].