ZHOU Xiao-jing , ZHAO Guo-qing , GU Yun-gao , ZHANG Bo . Chemical Evolution of Heavy r-Process Elements Considered the Time Delay[J]. Journal of Hebei University(Natural Science Edition), 2010 , 30(4) : 365 -370 . DOI: 10.3969/j.issn.1000-1565.2010.04.007

[1] 周晓静, 张波, ZHOU Xiao-jing, ZHANG Bo. 星系晕较重r-过程元素产量和丰度的离散 [J]. 河北师范大学学报(自然科学版) 2009.
[2] WALLERSTEIN G, GREENSREIN J L, PARKER R. Red giants with extreme metal deficiencies [J]. Astrophysical Journal 1963, 137.
[3] SPITE M, SPITE F. Nucleosynthesis in the Galaxy and the chemical composition of old halo stars [J]. Astronomy and Astrophysics 1978, 67(01).
[4] MCWILLIAM A, PRESTON G W, SNEDEN C. Spectroscopic analysis of 33 of the most metal poor stars.Ⅱ [J]. Astronomical Journal 1995, 109.
[5] SEAN G. RYAN, JOHN E. NORRIS, TIMOTHY C. BEERS. EXTREMELY METAL-POOR STARS. Ⅱ. ELEMENTAL ABUNDANCES AND THE EARLY CHEMICAL ENRICHMENT OF THE GALAXY [J]. The Astrophysical journal 1996, 1.part1(1.part1).
[6] SNEDEN C, PRESTON G W, MCWILLIAM A. Ultrametal-poor halo stars:The remarkable spectrum of CS 22892-052 [J]. Astrophysical Journal 1994, 431.
[7] Sneden C., Preston GW., Cowan JJ., Burris DL., Armosky BJ., Mcwilliam A.. THE ULTRA-METAL-POOR, NEUTRON-CAPTURE-RICH GIANT STAR CS 22892-052 [Review] [J]. The Astrophysical journal 1996, 2.part1(2.part1).
[8] COWAN J J, BURRIS D L, SNEDEN C. Evidence of heavy element nucleosynthesis early in the history of the Galaxy:the ultra-metal-poor star CS 22892-052 [J]. Astrophysical Journal 1995, 439.
[9] Fields BD., Truran JW., Cowan JJ.. A simple model for r-process scatter and halo evolution [J]. The Astrophysical journal 2002, 2.part1(2.part1).
[10] QIAN Y Z. Recent Progress intheUnderstandingofther-Process [J/OL]. http://arxiv.org/PS_cache/arxiv/pdf/0809/0809.2826v1.pdf 2000.
[11] SHIGEYAMA T, TSUJIMOTO T. Fossil imprints of the first generation supemova ejecta in extremelymeta1-deftcient stars [J]. Astrophysical Journal 1998, 507.
[12] TSUJIMOTO T, SHIGEYAMA T. New insights into the early stage of the galactic chemical evolution [J]. Astrophysical Journal 1998, 508.
[13] GILROY K, SNEDEN C, PILACHOWSKI C. Abundances of neutron capture elements in population Ⅱ stars [J]. Astrophysical Journal 1988, 327.
[14] GRATTON R, SNEDEN C. Abundances in extremely metal-poor stars [J]. Astronomy &Astrophysics 1988, 204(1-2).
[15] HARTMANN K L, GEHREN T. Metal-poor subdwarfs and early galactic nucleosynthesis [J]. Astronomy & strophysics 1988, 199(06).
[16] STEENBOOK W. Barium magnesium and iron in seven chemically unevolved stars and the nuclear evolution of the galactic disk [J]. Astronomy and Astrophysics 1983, 126(02).
[17] PETERSON R C, KRUUCZ R L. Relative abundance determinations in extremely meta1-poor gian ts.Ⅱ.transition probabilities and the abundance determinations [J]. Astrophysical Journal 1990, 350.
[18] GRATTON R G, SNEDEN C. Abundances of neutron-capture elements in metal-poor stars [J]. Astronomy and Astrophysics 1994, 287.
[19] da SILVA L, de LA REZA R, de MAGALHAES S D. Abundance analysis of the Eu and Ba in selected solar type starspreliminary results [J]. Astrophysical Ages and Dating Methods 1990.
[20] 赵刚. 贫金属星的重元素丰度Ⅱ.细致的光谱分析 [J]. 天体物理学报 1993, 131(04).