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
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
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.
LI Ji;ZHANG Bo;WEI Guo-qiang;ZHANG Li-ping;PENG Qiu-he;. Abundances of the Neutron-Capture Elements in Metal-Poor Halo Star HD 126238[J]. 中国物理快报, 1999, 16(8): 619-621.
LI Ji, ZHANG Bo, WEI Guo-qiang, ZHANG Li-ping, PENG Qiu-he,. Abundances of the Neutron-Capture Elements in Metal-Poor Halo Star HD 126238. Chin. Phys. Lett., 1999, 16(8): 619-621.
1999, Vol. 16 
