Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001acasn..42...22z&link_type=abstract
Acta Astronomical Sinica, vol.42, no.1, p. 22-28.
Astronomy and Astrophysics
Astronomy
2
Metal-Poor Star, Metallicity, Element Captured By Neutrons, Abundance
Scientific paper
Based on our model to compute the heavy element abundances in metal-poor stars, the authors study the heavy-element abundance distributions in 21 metal-poor stars published in 1999. The results show that the heavier elements agree well with the observed data, but the lighter elements deviate from them, and this further shows that the heavier element abundances from different nucleosynthesis processes in metal-poor surroundings are similar to those from corresponding processes in the solar system but the contribution ratios are different, and the lighter element abundances deviate from that of the solar system. At the same time the results suggest the nucleosynthesis sites of the lighter and heavier elements are different, namely they have different nucleosynthesis mechanisms. In this paper, the authors especially discuss the influence of the observed abundance errors on the component coefficients of different nucleosynthesis processes.
Li Jiying
Liu Jin-Hua
Peng Qiu He
Zhang Baigang
Zhang Ya-Xing
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