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钡星s-元素丰度的研究

Investigation of s-element Abundances for AGB Stars
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摘要 采用角动量守恒的星风吸积模型,计算了5颗钡星的重元素丰度,并和观测结果作了比较.探讨了钡星的形成机制和中子俘获在重元素核合成方面所起的主导作用,及金属丰度对强钡星和弱钡星形成的影响. Adopting the angular momentum conservation model of wind accretion, we calculate the heavy-element abundances of five barium stars and compare calculated result to observation. Discuss formation mechanism of barium stars and important affect of neutron captores on nucleosynthesis of heavy-element, impact of metallicity for formation of strong barium stars and mild barium stars.
作者 丁振瑞 刘俊红 张江
机构地区 河北大学物理科学与技术学院 石家庄学院物理系 河北师范大学物理科学与信息工程学院
出处 《河北大学学报（自然科学版）》 CAS 北大核心 2009年第3期251-255,共5页 Journal of Hebei University(Natural Science Edition)
基金 国家自然科学基金资助项目(10673002)
关键词 钡星 超丰 金属丰度 中子辐照量 barium stars over abundances metallicity neutron exposure
分类号 P142.9 [天文地球—天体物理]
  • 相关文献

参考文献9

  • 1BOFFIN H M J,JORISSEN A.Can a barium star be produced by wind accretion in a detached binary[J].Astronomy and Astrophysics,1988,205:155-163.
  • 2BOFFIN H M J,ZACS L.Examination of the wind accretion scenario for barium stars[J].Astronomy and Astrophysics,1994,291:811-814.
  • 3LIU Junhong,ZHANG Bo,LIANG Yancun.Orbital elements of barium stara formed through a wind accretion scenario[J].Astronomy and Astrophysics,2000,363:660-666.
  • 4LIANG Yancun,ZHAO Gang,ZHANG Bo.The heavy-element abundances of AGB stars and the angular momentum conservation model of wind accretion for barium stara[J].Astronomy and Astrophysics,2000,363:555-567.
  • 5BUSSO M,GALLINO R,LAMBERT D L,et al.Nucleosynthesis and mixing on the Asymptotic Giant Branch Ⅲ.predicted and observed s-process abundances[J].The Astrophysical Journal,2001,557:802-821.
  • 6ALLEN D M,BARBUY B.Analysis of 26 barium stars[J].Astronomy and Astrophysics,2006,454:917-932.
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  • 8刘俊红,范虹,东艳晖.外赋AGB星s-元素丰度与金属丰度的关系[J].河北大学学报（自然科学版）,2008,28(1):27-30. 被引量：1
  • 9JORISSEN A,VAN EXK S,MAYOR M,et al..Insights into the formation and Tc-poor Sstars from an extended sampie of orbital elememts[J].Astronomy and Astrophysics,1998,332:877-903.

二级参考文献9

  • 1BOFFIN H M J ,JORISSEN A. Can a barium star be produced by wind accretion in a deteched binary?[J]. Astronomy and Astrophysics, 1988 ,205: 155- 163.
  • 2STRANIERO O, GALLINO R, BUSSO M, et al. Radiative ^13C buring in Asymptotic Giant Branch stars and s-processing [J]. The Astrophysical Journal, 1995,440 : L85 - L87.
  • 3LIANG YAN CUN, ZHAO GANG, ZHANG BO. The heavy-element abundances of AGB stars and the angular momentum conservation model of wind accretion for barium stara [J]. Astronomy and Astrophysics, 2000,363:555- 567.
  • 4LIU JUN HONG, ZHANG BO, LIANG YAN CUN, et al. Orbital elements of barium star formed through a wind scenario [J ]. Astronomy and Astrophysics, 2000,363 : 660 - 666.
  • 5BUSSO M, GALLINO R, LAMBERT D L, et al. Nucleosynthesis and mixing on the Asymptotic Giant Branch Ⅲ. predicted and observed s-process abundances [ J ]. The Astrophysical Journal, 2001,557: 802 - 821.
  • 6BUSSO M, GALLINO R, LAMBERT D L, et al. Nucleosynthesis and mixing on the Asymptotic Giant Branch I MS ans S stars with and without Tc[J]. The Astrophysical Journal , 1992,399:218- 230.
  • 7BUSSO M, LAMBERT D L, BEGLIO L , et al. Nucleosynthesis an.d mixing on the Asymptotic Giant Branch Ⅱ. carbon and barium in the galactic [J]. The Astrophysical Journal, 1995,446:775 -792.
  • 8张波,常瑞香,彭秋和.3M_⊙AGB星表面重元素丰度的演化[J].天文学报,1997,38(3):231-238. 被引量：6
  • 9石维彬,牛萍,张波,刘俊红,彭秋和.钡星系统轨道根数分布及丰度的Monte-Carlo模拟计算[J].天文学报,2003,44(2):116-125. 被引量：3
河北大学学报（自然科学版）
2009年 第3期

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