91 citations · 617 across the 17 of their papers we have counts for
17 papers
NLTE analysis of copper lines in different stellar populations
J. R. Shi, H. L. Yan, Z. M. Zhou +1
The copper abundances of 29 metal-poor stars are determined based on the high resolution, high signal-to-noise ratio spectra from the UVES spectragraph at the ESO VLT telescope. Ou…
Sodium abundances of AGB and RGB stars in Galactic globular clusters II. Analysis and results of NGC 104, NGC 6121 and NGC 6809
Y. Wang, F. Primas, C. Charbonnel +4
We analyzed the high-resolution spectra of a large sample of AGB and RGB stars in the Galactic globular clusters (GCs) NGC 104, NGC 6121, and NGC 6809 obtained with FLAMES/GIRAFFE…
Sodium abundances of AGB and RGB stars in galactic globular clusters I. Analysis and results of NGC 2808
Y. Wang, F. Primas, C. Charbonnel +4
Galactic globular clusters (GC) are known to have multiple stellar populations and be characterised by similar chemical features, e.g. O-Na anti-correlation. While second-populatio…
Fundamental stellar parameters and age-metallicity relation of Kepler red giants in comparison with theoretical evolutionary tracks
Y. Takeda, A. Tajitsu, B. Sato +3
Spectroscopic parameters (effective temperature, metallicity, etc) were determined for a large sample of ~100 red giants in the Kepler field, for which mass, radius, and evolutiona…
Non-LTE analysis of copper abundances for the two distinct halo populations in the solar neighborhood
H. L. Yan, J. R. Shi, P. E. Nissen +1
Two distinct halo populations were found in the solar neighborhood by a series of works. They can be clearly separated by [alpha\Fe] and several other elemental abundance ratios in…
Non-LTE analysis of neutral copper in the late-type metal-poor stars
H. L. Yan, J. R. Shi, G. Zhao
We investigated the copper abundances for late-type stars in the Galactic disk and halo with effective temperatures from K to K and [Fe/H] from to $-0.17…