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《中国天文和天体物理学报(英文版)》 2003-05
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Galactic Chemical Evolution of the Lighter Neutron Capture Elements Sr, Y and Zr

Cui-Hua Du, Bo Zhang, Han-Feng Song and Qiu-He Peng 1 Department of Physics, Hebei Normal University, Shijiazhuang 050016; dch 2 National Astronomical Observatory, Chinese Academy of Science, Beijing 100012 3 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 4 Department of Astronomy, Nanjing University, Nanjing 210093  
Based on a three-component Galaxy chemical evolutionary model satisfying a large set of Galactic and extragalactic constraints, we compute the chemical evolution of the lighter neutron capture elements (e.g., Sr, Y and Zr) taking into account contributions from three processes. We compare our model results with available observational results and find that the observed trends can be understood in the light of present knowledge of neutron capture nucleosynthesis.
【Fund】: Supported by the National Natural Science Foundation of China
【CateGory Index】: P152
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