335 citations · 8.1k across the 221 of their papers we have counts for
Showing 1998Show all
2 papers · 1 filter
astro-ph1998★ 1 cited
On the kinematics of damped Lyman-alpha systems
C. Ledoux, P. Petitjean, J. Bergeron +2
We report on high spectral resolution observations of five damped Ly-alpha absorbers. Line velocity profiles and heavy element abundances are discussed. Nitrogen is found to have a…
astro-ph1998
Do the central engines of quasars evolve by accretion ?
R. Srianand, Gopal-Krishna
According to a currently popular paradigm, nuclear activity in quasars is sustained via accretion of material onto super-massive black holes located at the quasar nuclei. A useful…