Abstract

HE0141-3932 (zem = 1.80) is a bright blue radio-quiet quasar which reveals an emission line spectrum with an unusually weak Lý line. In addition, large redshift differences (?z = 0.05) are observed between high ionization and low ionization emission lines. Absorption systems identified at zabs = 1.78, 1.71, and 1.68 show mild oversolar metallicities (Z ? 1-2Z?) and can be attributed to the associated gas clouds ejected from the circumnuclear region. The joint analysis of the emission and absorption lines leads to the conclusion that this quasar is seen almost pole-on. Its apparent luminosity may be Doppler boosted by ? 10 times. The absorbing gas shows high abundance of Fe, Mg, and AI ([Fe, Mg, Al/C] ? 0.15 ± 0.10) along with underabundance of N ([N/C] ? -0.5). This abundance pattern is at variance with current chemical evolution models of QSOs predicting [N/C] ? 0 and [Fe/C] < 0 at Z ? Z?. Full details of this work are given in Reimers et al. (2005). © 2005 International Astronomical Union.