Hutsemekers, Damien[Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Active Galactic Nuclei: From Central Engine to Host Galaxy. ASPC 290
[en] The SDSS has confirmed the existence of populations of broad absorption line quasars with extreme properties. I will discuss the discovery of redshifted absorption troughs (confirmation of a rotating disk wind?), absorption from FeIII but not FeII (a very large column density of moderately ionized gas?), extremely reddened objects (extinction curves even steeper than that of the SMC), objects with overlapping troughs that remove 90% of the flux below MgII, and two mysterious objects which may or may not be unusual BALs. Implications of these objects for quasar and BAL outflow models will be discussed, along with preliminary results of various followup observations.