First Stars II. Elemental abundances in the extremely metal-poor star CS 22949--037: A diagnostic of early massive supernovae

E. Depagne, V. Hill, M. Spite +10

CS 22949--037 is one of the most metal-poor giants known ([Fe/H]$\approx -4.0$), and it exhibits large overabundances of carbon and nitrogen (Norris et al.). Using VLT-UVES spectra…