| s-过程核合成参数化研究与铅星产生的物理条件 |
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| 引用本文： | 刘永利,刘清华,周贵德.s-过程核合成参数化研究与铅星产生的物理条件[J].河北师范大学学报(自然科学版),2006,30(3):305-309. |
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| 作者姓名： | 刘永利 刘清华 周贵德 |
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| 作者单位： | 1. 邢台学院,物理系,河北,邢台,054001
2. 沧州师范专科学校,物理系,河北,沧州,061001 |
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| 摘 要： | 介绍了重元素核合成理论和一些最新的AGB星核合成模型,利用参数化方法计算了AGB星核合成的产量,得到了不同中子数密度(初始金属丰度)、脉冲周期、重叠因子下Pb/Ce]的数值,在此基础上讨论了铅星产生的物理条件,进而解释了已观测到的各金属丰度下AGB星Pb丰度离散的问题.
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| 关 键 词： | AGB星 核合成 参数化方法 铅星 |
| 文章编号： | 1000-5854(2006)03-0305-05 |
| 收稿时间： | 2005-06-29 |
| 修稿时间： | 2005年6月29日 |
Slow Neutron-capture Progress Nucleosynthesis Parametric Method and Physical Condition under Which Pb Stars Form |
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| LIU Yong-li,LIU Qing-hua,ZHOU Gui-de.Slow Neutron-capture Progress Nucleosynthesis Parametric Method and Physical Condition under Which Pb Stars Form[J].Journal of Hebei Normal University,2006,30(3):305-309. |
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| Authors: | LIU Yong-li LIU Qing-hua ZHOU Gui-de |
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| Institution: | 1. Department of Physics,Xingtai CoUege,Hebei Xingtai 054001 ,China; 2. Department of Physics, Cangzhou Teachers College, Hebei Cangzhou 061001,China |
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| Abstract: | The theory of nucleosynthesis of heavy element and some new model of AGB nucleosynthesis are introduced.By using the parametric method the production of AGB nucleosynthesis is computed.the value of at the different neutron density(the different initial metallicity),different pulse period and different overlap is drawn.Basing on the computation,the physical condition under which the Pb stars form is discussed and the scatter of the abundance of at the different metallicity is interpreted. |
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| Keywords: | AGB stars nucleosynthesis parametric method Pb stars |
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