摘要
以单星的参数化慢中子俘获过程核合成模型为基础,提出了包含物质吸积的外赋AGB星参数化模型:在双星系统中,采用稳定的洛希瓣物质转移率,通过逐次脉冲将主星外包层的物质转移给伴星,伴星表面的物质经多次混合而最终形成外赋AGB星。此外,利用此模型较好地拟合了HD 201626和HD 196944的表面元素丰度。
On the basis of the parametric method of single AGB star with s-process nucleosynthesis,a mass accretion parametric model is presented for the extrinsic AGB stars：In a binary system,the host, with a mass transfer rate for stable RLOF,transfers the material in successive pulses to the companion, and the latter will be a extrinsic AGB by receiving and mixing these material in its surface. And it gets a good fit to the observed abundances of HD201626 and HD196944.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2009年第1期17-20,共4页
Journal of Guangxi Normal University:Natural Science Edition
基金
国家自然科学基金资助项目(10347002)
关键词
外赋AGB
双星
S-过程
物质吸积
extrinsic AGB stars
binary stars
s-process mass accretion
