An unusual iron Lo-BAL quasar detected by ISOCAM

Details An unusual iron Lo-BAL quasar detected by ISOCAM An unusual iron Lo-BAL quasar detected by ISOCAM

2002-05-02

arxiv.org/abs/astro-ph/0205022v1

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, A&A letters in press

Scientific paper

10.1051/0004-6361:20020663

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 Feii. 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.

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