Journal article

The heating mechanism for the warm/cool dust in powerful, radio-loud active galactic nuclei

C Tadhunter, D Dicken, J Holt, K Inskip, R Morganti, D Axon, C Buchanan, R Gonzalez Delgado, P Barthel, I van Bemmel

ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2007

Abstract

The uncertainty surrounding the nature of the heating mechanism for the dust that emits at mid- to far-IR (MFIR) wavelengths in active galaxies limits our understanding of the links between active galactic nuclei (AGNs) and galaxy evolution, as well as our ability to interpret the prodigious infrared and submillimeter emission of some of the most distant galaxies in the universe. Here we report deep Spitzer observations of a complete sample of powerful, intermediate-redshift (0.05 < z < 0.7) radio galaxies and quasars. We show that AGN power, as traced by [O III] λ5007 emission, is strongly correlated with both the mid-IR (24 μm) and the far-IR (70 μm) luminosities, but with increased scatte..

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