摘要
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 C_(1),C_(2),and C_(3).The results are C_(1)=2.52,C_(2)=0.26,C_(3)=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.
作者
LI Ji
ZHANG Bo
WEI Guo-qiang
ZHANG Li-ping
PENG Qiu-he
李冀;张波;魏国强;张丽萍;彭秋和(Department of PhysicSj Hebei Normal University,Shijiazhuang 050016;Chinese Academy of Sciences-Peking University Joint Beijing Astrophysical Center,Beijing 100871;Department of Astronomy,Nanjing University,Nanjing 210093)
基金
the National Natural Science Foundation of China under Grant No.19673008.