Bibcode
Duc, P.-A.; Hall, P. B.; Fadda, D.; Chanial, P.; Elbaz, D.; Monaco, P.; Pompei, E.; Poggianti, B. M.; Flores, H.; Franceschini, A.; Biviano, A.; Moorwood, A.; Cesarsky, C.
Referencia bibliográfica
Astronomy and Astrophysics, v.389, p.L47-L50 (2002)
Fecha de publicación:
7
2002
Revista
Número de citas
10
Número de citas referidas
7
Descripción
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. Based on observations
with ISO, an ESA project with instruments funded by ESA Member States
with the participation of ISAS and NASA and observations collected at
the European Southern Observatory, Paranal, Chile (ESO No 65.O-0563 A),
at La Silla, Chile (ESO No 67.A-0253 A).