Lithium Depletions in Late-type Dwarfs

摘要：

Using a self-consistant dynamic theory of non-local convection in chemically inhomogeneous stars,the lithium depletion in MS stars of masses 0.725 1.5 M are calculated. Both of the overshooting and microdiffusion are included in a consistent way. The comparisons of theretical reasults with the observed Li depletions in open clusters show that the general characters of Li depletions can be reproduced by theory. The overshooting mixing and microdiffusion induced by gravitational setting and radiative accelerations may be two main mechanisms of Li depletion.

关键词： Convection- star abundance-star late-type-stars evolution- open clusters and associations general

作者: D.R.Xiong L.Deng

作者单位: Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210008 National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012

会议类型: 国际会议

会议名称: The 252th Symposium of the International Astronomical Union(国际天文学联合会第252届研讨会)

会议地点: 海南三亚

会议语种:英文

页码: 61-66

在线出版日期: 2008-04-06（万方平台首次上网日期，不代表论文的发表时间）