The Far-IR Spectral Energy Distributions of Luminous Active Galactic Nuclei

Details The Far-IR Spectral Energy Distributions of Luminous Active Galactic Nuclei The Far-IR Spectral Energy Distributions of Luminous Active Galactic Nuclei

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop...82r&link_type=abstract

Spitzer Proposal ID #82

Computer Science

Databases

Scientific paper

The Far-IR Spectral Energy Distributions of Luminous Active Galactic NucleiHines, G.Rieke, Neugebauer, LowBy obtaining accurate photometry in the three MIPS bands, we will address the relationship between different forms of luminous AGNs, the evolution of AGN properties with redshift, and which physical processes regulate the energy outputs. In particular, unification schemes posit that various types of AGN (e.g., QSO vs. Hyperluminous Infrared Galaxy) are fundamentally similar in nature, but appear to have diverse properties because they are viewed at different angles. These aspect angles accentuate or de-emphasize emission at various wavelengths and from various regions near the central engine. We concentrate on sub-sets of the most luminous 10-20 objects each drawn from complete catalogs with z <= 0.3 and selected on different bases e.g., x-ray brightness, high frequency radio brightness, etc.. Use of previously well defined samples and the z <= 0.3 redshift limit aids completeness and ensures access to large existing databases and high resolution imaging. We supplement the core sample with two small samples of AGNs at z ? 2 and z >= 4.5 to probe evolutionary trends. This comparison will be particularly important for evaluating the effectiveness of our low-z SEDs as templates for identifying very high redshift AGNs.

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