期刊文献+

s+r星单辐照模型与对流模型参数的对比研究 被引量:1

Comparisons and Investigation of the Parameters of Single Netron-exposure Model and Convectional Model for s+r Stars
下载PDF
导出
摘要 将解释s+r星元素丰度的单辐照和对流2种参数化模型的最佳拟合参数进行了对比,找出了这些参量的分布规律以及各参量之间的关系,得到了s-过程和r-过程核合成相关信息,进一步确定了s+r星的主要形成机制.还对文献[13]做了有益的补充,给出了单辐照模型r-过程分量系数与s-过程分量系数之间的关系图. By comparing the best-fit parameters of the two models which explain the observed abundances of s + r stars: single neutron-exposure model and convectional model, the distributing law and the relations of the parameters were found and more information on nucleosynthesis of s-process and r-process was also obtained. Therefore,the main formation mechanism of s + r stars gets further confirmed. Meanwhile, the graph about the relationship between the component coefficients of the s-process and r-process is also presented, which is an constructive supplement to literature.
出处 《河北师范大学学报(自然科学版)》 CAS 北大核心 2007年第6期761-764,共4页 Journal of Hebei Normal University:Natural Science
基金 国家自然科学基金(10673002)
关键词 贫金属星 AGB星 s+r星 参数化模型 mental-poor star AGB star s+r star parametric model
  • 相关文献

参考文献13

  • 1HILL V,BARBUY B, SPITE M, et al. Heavy-element Abundances in the CH/CN-strong Very Metal-poor Stars CS 22948-27 and CS 29497-34 [J]. A&A,2000,353:557-568.
  • 2SNEDEN C, COWAN J J, BURRIS D L, et al. Hubble Space Telescope Observations of Neutron-Capture Elements in Very Metal Poor Stars [J]. ApJ, 1998,496:235-245.
  • 3JONSELL K,BARKLEM P S,GUSTAFSSON B,et al. The Hamburg/ESO R-process Enhanced Star Survey (HERES). III. HE 0338-3945 and the Formation of the r + s Stars [J] .A&A,2006,451:651-670.
  • 4QIAN Y-Z,WASSERBURG G J. Stellar Sources for Heavy r-process Nuclei [J]. ApJ,2003,588:1 099-1 109.
  • 5ZIJLSTRA A A. Low-mass Supernovae in the Early Galactic Halo: Source of the Double r/s-process Enriched Aalo Stars [J ]. MNRAS,2004,348 : L23- L27.
  • 6WANAJO S,NOMOTO K, IWAMOTO N,et al. Enrichment of Very Metal Poor Stars with Both r-process and s-process Elements from 8-10 Msolar Stars [J]. ApJ ,2006,636:842-847.
  • 7BARBUY B, SPITE M, SPITE F,et al. New Analysis of the Two Carbon-rich Stars CS 22948-27 and CS 29497-34:Binarity and neutron capture elements [J]. A&A,2005,429:1 031-1 042.
  • 8DELAUDE D, GALLINO R,CRITALLO S,et al. Lead and s-process Elements in Stars of Various Metallicities.-AGB Predictions Compared with Observation [ J ]. Mere Soe Astron Italiana,2004,75 : 706- 712.
  • 9IVANS I I, SNEDEN C, GALLINO R, et al. Near-Ultraviolet Observations of CS 29497-030 : New Constraints on NeutronCapture Nucleosynthesis Processes [J]. ApJL,2005,627 : L145-L148.
  • 10GALLINO R, DELAUDE D, HUSTI R, et al. Predictions of s-process Lead in Low-metallicity Stars Compared with Spectroscopic Observations [J]. Nuel Phys A,2005,758:485-488.

同被引文献4

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部