The Hamburg/ESO R-process enhanced star survey (HERES). II. Spectroscopic analysis of the survey sample

We present the results of analysis of "snapshot" spectra of 253 metal-poor halo stars -3.8 ≤ [Fe/H] ≤ -1.5 obtained in the HERES survey. The snapshot spectra have been obtained with VLT/UVES and have typically S/N ∼ 54 per pixel (ranging from 17 t