Elemental abundances of high redshift quasars ?

A sample of 16 high redshift quasars with 2.4 <∼z<∼3.8 was observed with moderate spectral resolution in the restframe ultraviolet. The emission-line fluxes of NV 1240, CIV1549, and HeII1640 were used to estimate the metallicity of the line emitting gas. The line ratios were investigated within the frame work of models presented by Hamann & Ferland (1992… CONTINUE READING