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Abundances of the Neutron-Capture Elements in Metal-Poor Halo Star HD 126238 |
| LI Ji1;ZHANG Bo1,2;WEI Guo-qiang1;ZHANG Li-ping1;PENG Qiu-he2,3 |
| 1Department of Physics, Hebei Normal University, Shijiazhuang 050016
2Chinese Academy of Sciences-Peking University Joint Beijing Astrophysical Center, Beijing 100871
3Department of Astronomy, Nanjing University, Nanjing 210093
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| Cite this article: |
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LI Ji, ZHANG Bo, WEI Guo-qiang et al 1999 Chin. Phys. Lett. 16 619-621 |
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Abstract Using the new observations of several neutron-capture elements in metal-poor star HD 126238, combining a computer model and the method of least square, we accurately compute the component coefficients C1, C2, and C3. The results are C1 = 2.52, C2 = 0.26, C3 = 0.31. Then employing the values of the component coefficients, we determine the relative contributions of the r-process and the s-process to the abundances of neutron-capture elements in the HD 126238, and predict the abundances of all the neutron-capture elements in this metal-poor star. The predictions agree well with the observations.
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97.20.Tr
26.45.+h
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Published: 01 August 1999
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| PACS: |
97.20.Tr
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(Population II stars (horizontal branch, metal poor, etc.))
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26.45.+h
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