The blue straggler S 1082: A triple system in the old open cluster M67

被引：45
作者：
van den Berg, M
Orosz, J
Verbunt, F
Stassun, K
机构：
[1] Univ Utrecht, Astron Inst, NL-3508 TA Utrecht, Netherlands
[2] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA
来源：
ASTRONOMY & ASTROPHYSICS | 2001年 / 375卷 / 02期
关键词：
binaries : eclipsing; binaries : spectroscopic; blue stragglers; stars : individual : S 1082; open clusters and associations : individual : M67;
D O I：
10.1051/0004-6361:20010589
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a photometric and spectroscopic study of the blue straggler S 1082 in the open cluster M67. Our observations confirm the previously reported 1.07 day eclipse light curve and the absence of large radial-velocity variations of the narrow-lined star. However, we find two more spectral components which do vary on the 1.07 day period. We conclude that the system is triple. We fit the light and radial-velocity curves and find that the total mass of the inner binary is more than twice the turnoff mass and that the outer companion to the binary is a blue straggler on its own account. We briefly discuss formation scenarios for this multiple system.
引用
收藏
页码：375 / 386
页数：12
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