All Tables

Table 2: Comparison of the optical and X-ray classification.
Table 1: Best fit parameters for the whole sample of sources in the CDFS with a measured spectroscopic or photometric redshift. Error bars correspond to 1 $\sigma$ c.l. Luminosities are computed for a flat $\Lambda = 0.7$ cosmology and H₀ = 70km s^-1/Mpc. ID are from Giacconi et al. (2002). Quality flags with $Q\geq 1$ indicate optical spectral quality: Q=1 corresponds to spectra with a single optical line identified; Q=2 indicates secure spectra but uncertain counterpart; Q=3 indicates secure redshift. Photometric redshifts are obtained from different methods described in Zheng et al. (2004): HyperZ (Q=0.2), BPZ (Q=0.3), COMBO-17 (Q=0.4 Wolf et al. 2001; 2003; 2004). When we have consistent redshift from more than one method, the corresponding quality flag is the sum of the single Q.