An unusual iron Lo-BAL quasar detected by ISOCAM ?
/ Authors
P. Duc, P. Duc, P. B. Hall, D. Fadda, P. Chanial, D. Elbaz, P. Monaco, E. Pompei, B. Poggianti, Hector Flores
and 4 more authors
/ Abstract
We report the discovery of an unusual low–ionization broad absorption line quasar at $z=1.776$ which exhibits absorption lines from many excited states of Fe ii. This member of the rare class of “FeLoBAL” quasars was serendipitously found in a mid–infrared (MIR) survey of distant clusters carried out with the ISOCAM camera. ISO J005645.1-273816 has a high MIR to UV luminosity ratio, suggesting a strong dust obscuration plus emission from very hot dust. This characteristic makes MIR surveys particularly efficient at detecting LoBAL quasars.
Journal: Astronomy and Astrophysics