91 citations · 617 across the 17 of their papers we have counts for
5 papers · 1 filter
Beryllium abundances in metal-poor stars
K. F. Tan, J. R. Shi, G. Zhao
We have determined beryllium abundances for 25 metal-poor stars based on the high resolution and high signal-to-noise ratio spectra from the VLT/UVES database. Our results confirm…
Barium even-to-odd isotope abundance ratios in thick disk and thin disk stars
L. Mashonkina, G. Zhao
We present the Ba even-to-odd isotope abundance ratios in 25 cool dwarf stars with the metallicity [Fe/H] ranged between 0.25 and --1.35. Our method takes advantage of the hyperfin…
The [Zn/Fe] -- [Fe/H] trend for disk and halo stars
Y. Q. Chen, P. E. Nissen, G. Zhao
Zn abundances, derived from a model atmosphere analysis of the 6362.35 A ZnI line, are presented for 44 thin disk, 10 thick disk and 8 halo dwarf stars in the metallicity range -1.…
Sulphur abundances in disk stars: a correlation with silicon
Y. Q. Chen, P. E. Nissen, G. Zhao +1
We have performed new determinations of sulphur and silicon abundances for a sample of 26 disk stars based on high-resolution, high signal-to-noise spectra. The results indicate a…
Sources of carbon and the evolution of the abundance of CNO elements
Y. C. Liang, G. Zhao, J. R. Shi
Using the standard infall model of Galactic chemical evolution, we explore the origin of carbon and calculate the abundance evolution of CNO elements for 8 different models of stel…