All Tables

Table 1: The COMBO-17 filter set: exposure times and 10 $\sigma$ magnitude limits reached for point sources, averaged over all three fields. The R-band observations were selected to be taken under the best seeing conditions (FWHM $0\hbox{$.\!\!^{\prime\prime}$ }55\ldots0\hbox{$.\!\!^{\prime\prime}$ }8$ ). See also Fig. 1.
Table 2: Positions and galactic reddening (Schlegel et al. 1998) for the three COMBO-17 fields analysed. All observations were obtained at the Wide Field Imager at the MPG/ESO 2.2 m-telescope at La Silla.
Table 3: Tabulated AGN number counts as a function of R band magnitude. The 2nd and 4th column give the actual numbers of objects in the current COMBO-17 sample (within 0.78 deg²), while the 3rd and 5th column give incompleteness-corrected surface densities per deg².
Table 4: Tabulated binned AGN luminosity function.
Table 5: Coefficients of the best-fit analytic models describing the luminosity function and its evolution as either PDE or PLE. For details on the notation see text.
Table 6: Predicted AGN surface densities, based on (partly extrapolated) COMBO-17 results. Each field gives the cumulative AGN number per deg², brighter than R and with redshift greater than z, as derived from the two simple evolution models discussed in this paper.