双星不是形成钡星的充分条件  

Binarity is not Sufficient Condition to Produce Barium Star

作　　者：刘俊红[1] 东艳晖[1] 潘丽娟 张彩霞[1] 

机构地区：[1]石家庄学院物理系,石家庄050035 [2]石家庄第57中学,石家庄050031

出　　处：《石家庄学院学报》2006年第6期20-22,35,共4页Journal of Shijiazhuang University

摘　　要：讨论了双星是否是产生钡星的必要和充分条件,因为已知道的钡星系统全是双星.根据钡星的形成机制,双星确实是形成钡星的必须条件,但是在一些具有和钡星系统相似轨道根数的双星中,存在普通巨星,这充分说明双星不是产生钡星的充分条件.The question as to whether binarity is a necessary and sufficient condition to produce barium star is addressed. Since barium stars with strong anomalies are all binaries,binarity is truly requied for a barium star. The presence of normal giants in binary systems with barium-like orbital parameters is a strong indication that binarity is not sufficient condition to produce a barium star.

关 键 词：AGB星 s-过程元素 金属度 星风吸积 

分 类 号：P114.8[天文地球—天文学]