The evolution of faint AGN between z ' 1 and z ' 5 from the COMBO-17 survey

@article{Wolf2003TheEO,
  title={The evolution of faint AGN between z ' 1 and z ' 5 from the COMBO-17 survey},
  author={Christian Wolf and Lutz Wisotzki and Andrea Borch and Simon Dye and Martina Kleinheinrich and Klaus Meisenheimer},
  journal={Astronomy and Astrophysics},
  year={2003},
  volume={408},
  pages={499-514}
}
We present a determination of the optical/UV AGN luminosity function and its evolution, based on a large sample of faint (R< 24) QSOs identified in the COMBO-17 survey. Using multi-band photometry in 17 filters within 350 nm < obs < 930 nm, we could simultaneously determine photometric redshifts with an accuracy of z < 0:03 and obtain spectral energy distributions. The redshift range covered by the sample is 1:2 < z < 4:8, which implies that even at z' 3, the sample reaches below luminosities… 
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