12 citations · 13 across the 3 of their papers we have counts for
3 papers · 1 filter
Large-scale structures in the distribution of X-ray selected AGN
D. Engels, F. Tesch, C. Ledoux +5
We are searching for large-scale structures in the distribution of AGN discovered by the ROSAT All-Sky Survey. The RASS detected > 60000 X-ray objects, of which approximately 35% a…
Adaptive optics imaging and integral field spectroscopy of APM 08279+5255: Evidence for gravitational lensing
C. Ledoux, B. Theodore, P. Petitjean +5
We report observations of the z = 3.87 broad absorption line quasar APM 08279+5255 (Irwin et al. 1998) with the Adaptive Optics Bonnette (AOB) of the Canada-France-Hawaii Telescope…
Are Damped Lyman alpha Systems Rotating Disks ?
Cedric Ledoux, Patrick Petitjean, Jacqueline Bergeron
We report on high spectral resolution observations of five damped Lyman alpha systems whose line velocity profiles and abundances are analyzed. By combining these data with informa…