Infrared Number Counts of AGN in the GOODS Fields

2) C. Megan Urry (2; (2) Yale Center for Astronomy; 3); (3) Physics Department; Astrophysics; E. Treister (1; the GOODS AGN Team ((1)Depto de Astronomia; U. de Chile; Yale U.)

arxiv: astro-ph/0503057 · v1 · submitted 2005-03-02 · 🌌 astro-ph

Infrared Number Counts of AGN in the GOODS Fields

E. Treister (1 , 2) C. Megan Urry (2 , 3) , the GOODS AGN Team ((1)Depto de Astronomia , U. de Chile , (2) Yale Center for Astronomy , Astrophysics , (3) Physics Department

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keywords infrarednumbercountsgoodslargeobscuredunificationagree

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Using the known numbers and evolution of unobscured AGN, and assuming that there is a large number of corresponding obscured AGN -- as expected if AGN unification is correct -- we predict the infrared number counts of AGN. These agree well with the observed GOODS Spitzer data at 3.6, 8 and 24 $\mu$m, provided that the dust content of the obscuring torus is $\sim 2$x less than assumed. This strongly supports the AGN unification picture, and implies a large population of infrared bright obscured AGN at all redshifts and luminosities.

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Infrared Number Counts of AGN in the GOODS Fields

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