钡星

钡星系统轨道根数分布及丰度的Monte-Carlo模拟计算

Monte Carlo Simulations on Orbital Elements and Abundance of Barium Stars

本文采用星风质量吸积的角动量守恒模型，并考虑到初始金属丰度对AGB星s-过程核合成的影响，用Monte-Carlo方法研究了弱钡星系统和强钡星系统的轨道根数的变化规律。

Carrying out a series of Monte-Carlo simulations , the works of orbital elements of binaries are recalculated considering the influence of initial metallicity on S-process nucleosynthesis of intrinsic AGB stars , and here we adopt wind accretion scenario with the total angular momentum conservation .

星风吸积引起的钡星重元素超丰

S process Element Overabundances of Ba Stars Through Wind Accretion

钡星重元素丰度的再研究

A Re-analysis of the Heavy-Element Abundance of Barium Stars

钡星对于重元素核合成及星系化学演化的研究都有非常重要的意义。

It is very significant to Ba stars for heavy-element nucleosynthesis and Galactic chemical evolution .

钡星的形成机制模型

Barium Star Formation Model

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。

The question as to whether binarity is a necessary and sufficient condition to produce barium star is addressed .

由于钡星系统是由普通红巨星双星系统演化而来，因此钡星系统的轨道偏心率及周期的分布显示了经过质量吸积后双星系统的最终轨道特征。

As Ba star systems are evolved from G-K star systems , the distribution of orbital eccentricities and periods of Ba stars can show the final orbital character of binaries .