We present a comprehensive abundance analysis of 20 elements for 16 new low-metallicity stars from the Chemical Abundances of Stars in the Halo ( CASH ) project .
The abundances have been derived from both Hobby-Eberly Telescope High Resolution Spectrograph snapshot spectra ( R \sim 15 , 000 ) and corresponding high-resolution ( R \sim 35 , 000 ) Magellan MIKE spectra .
The stars span a metallicity range from [ Fe/H ] from - 2.9 to - 3.9 , including four new stars with \mbox { [ Fe / H ] } < -3.7 .
We find four stars to be carbon-enhanced metal-poor ( CEMP ) stars , confirming the trend of increasing [ C/Fe ] abundance ratios with decreasing metallicity .
Two of these objects can be classified as CEMP-no stars , adding to the growing number of these objects at [ Fe/H ] < -3 .
We also find four neutron-capture enhanced stars in the sample , one of which has [ Eu/Fe ] of 0.8 with clear r-process signatures .
These pilot sample stars are the most metal-poor ( \mbox { [ Fe / H ] } \lesssim - 3.0 ) of the brightest stars included in CASH and are used to calibrate a newly-developed , automated stellar parameter and abundance determination pipeline .
This code will be used for the entire \sim 500 star CASH snapshot sample .
We find that the pipeline results are statistically identical for snapshot spectra when compared to a traditional , manual analysis from a high-resolution spectrum .