GOODS Discovery of a Significant Population of Obscured AGN

Details GOODS Discovery of a Significant Population of Obscured AGN GOODS Discovery of a Significant Population of Obscured AGN

2004-09-25

arxiv.org/abs/astro-ph/0409603v1

Astronomy and Astrophysics

Astrophysics

To be published in Growing Black Holes, Proc. Garching Conference, June 2004, ed. A. Merloni, A. Nayakshin, R. Sunyaev (Spring

Scientific paper

10.1007/11403913_79

We analysed the optical and infrared properties of X-ray sources in the Great Observatories Origins Deep Survey (GOODS), a deep multiwavelength survey covering 0.1 square degrees in two fields. The HST ACS data are well explained by a unified AGN scheme that postulates roughly 3 times as many obscured as unobscured AGN, as are the spectroscopic and photometric redshift distributions once selection effects are considered. Our model predicts infrared number counts of AGN that agree well with the preliminary Spitzer data, confirming that large numbers of obscured AGN are present in the early Universe (z>1).

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