A&A 379, L21-L24 (2001)
Broad-line radio galaxies: Old and feeble?I. van Bemmel and P. Barthel
Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
(Received 21 August 2001 / Accepted 27 September 2001 )
Far-infrared photometry of broad-line radio galaxies shows this class of AGN to consist of many hot and some cool infrared emitters, with peaks in their spectral energy distributions around 25 m or longward of 60 m, respectively. Quantitative analysis indicates that this distribution relates to a substantial dispersion in the strength of the cool dust component: broad-line radio galaxies are relatively poor in large-scale dust. Possibly they have undergone a different merger evolution, or are relatively old AGN.
Key words: galaxies: active -- infrared: galaxies -- quasars: general
Offprint request: I. van Bemmel, email@example.com
© ESO 2001