314 citations · 758 across the 8 of their papers we have counts for
8 papers
Estimating the evolution of gas in the Fornax dwarf spheroidal galaxy from its star formation history: an illustrative example
Zhen Yuan, Y. -Z. Qian, Y. P. Jing
We propose that detailed data on the star formation history of a dwarf spheroidal galaxy (dSph) may be used to estimate the evolution of the total mass M_g(t) for cold gas in its s…
Where, oh where has the r-process gone?
Y. -Z. Qian, G. J. Wasserburg
We present a review of the possible sources for r-process nuclei. It is known that there is as yet no self-consistent mechanism to provide abundant neutrons for a robust r-process…
Metal Enrichment of the Intergalactic Medium and Production of Massive Black Holes
Y. -Z. Qian, G. J. Wasserburg
A model for the chemical evolution of the intergalactic medium (IGM) is presented using theoretical yields of very massive stars (VMSs) and Type II supernovae (SNe II). It is shown…
The Hamburg/ESO R-process Enhanced Star survey (HERES). I. Project description, and discovery of two stars with strong enhancements of neutron-capture elements
N. Christlieb, T. C. Beers, P. S. Barklem +15
We report on a dedicated effort to identify and study metal-poor stars strongly enhanced in r-process elements ([r/Fe] > 1 dex; hereafter r-II stars), the Hamburg/ESO R-process Enh…
Determination of Nucleosynthetic Yields of Supernovae and Very Massive Stars from Abundances in Metal-Poor Stars
Y. -Z. Qian, G. J. Wasserburg
(Abridged) We determine the yields of Na to Ni for Type II supernovae (SNe II) and the yield patterns of the same elements for Type Ia supernovae (SNe Ia) and very massive (>100 M_…
A Model for Abundances in Metal-Poor Stars
Y. -Z. Qian, G. J. Wasserburg
It is argued that the abundances of r-process related elements in stars with -3<[Fe/H]<-1 can be explained by the contributions of three sources. The sources are: the first generat…