872 citations · 3.3k across the 32 of their papers we have counts for
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astro-ph2003★ 6 cited
Hierarchical Structure Formation and Chemical Evolution of Damped Ly alpha Systems
Y. -Z. Qian, G. J. Wasserburg
We present a model for chemical evolution of damped Ly alpha systems considering production of metals by SNe II and infall associated with hierarchical structure formation. The gro…
astro-ph2003★ 91 cited
Stellar Sources for Heavy r-Process Nuclei
Y. -Z. Qian, G. J. Wasserburg
(Abridged) The stellar sites and the complete mechanism of r-process nucleosynthesis are still unresolved issues. From consideration of the observed abundances in metal-poor stars,…
astro-ph2003★ 134 cited
Abundance Analysis of HE2148-1247, A Star With Extremely Enhanced Neutron Capture Elements
Judith G. Cohen, Norbert Christlieb, Y. -Z. Qian +1
Abundances for 27 elements in the very metal poor dwarf star HE2148-1247 are presented, including many of the neutron capture elements. We establish that HE2148-1247 is a very high…