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The Chemical Abundances of Stars in the Halo (CASH) Project. III. A New Classification Scheme for Carbon-Enhanced Metal-poor Stars with S-process Element Enhancement
Julie K. Hollek, Anna Frebel, Vinicius M. Placco +4
We present a detailed abundance analysis of 23 elements for a newly discovered carbon-enhanced metal-poor (CEMP) star, HE 0414-0343, from the Chemical Abundances of Stars in the Ha…
Stellar science from a blue wavelength range - A possible design for the blue arm of 4MOST
C. J. Hansen, H. -G. Ludwig, W. Seifert +12
From stellar spectra, a variety of physical properties of stars can be derived. In particular, the chemical composition of stellar atmospheres can be inferred from absorption line…
High-resolution spectroscopic studies of ultra metal-poor stars found in LAMOST survey
Haining Li, Wako Aoki, Gang Zhao +3
We report on the observations of two ultra metal-poor (UMP) stars with [Fe/H]~-4.0 including one new discovery. The two stars are studied in the on-going and quite efficient projec…
Discovery of a strongly r-process enhanced extremely metal-poor star LAMOST J110901.22+075441.8
Haining Li, Wako Aoki, Satoshi Honda +3
We report the discovery of an extremely metal-poor (EMP) giant, LAMOST J110901.22+075441.8, which exhibits large excess of r-process elements with [Eu/Fe] ~ +1.16. The star is one…
An Elemental Assay of Very, Extremely, and Ultra Metal-Poor Stars
T. Hansen, C. J. Hansen, N. Christlieb +8
We present a high-resolution elemental-abundance analysis for a sample of 23 very metal-poor (VMP; [Fe/H] < -2.0) stars, 12 of which are extremely metal-poor (EMP; [Fe/H] < -3.0),…
The First Data Release (DR1) of the LAMOST general survey
A. -L. Luo, Y. -H. Zhao, G. Zhao +140
The Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) General Survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and…