The XMM-Newton survey in the Marano field. I. The X-ray data and optical follow-up

摘要: We report on a medium deep XMM-Newton survey of the Marano Field and optical follow-up observations. The mosaicked pointings in this quasar field cover 0.6 deg 2 with total 120 ks good observation time. detected 328 X-ray sources total. turnover flux our sample is $f_{\rm{X}}\sim 5 \times 10^{-15}$ erg cm -2  s -1 0.2-10 keV band. With VLT FORS1 FORS2 spectroscopy we classified 96 new X-ray counterparts.
The central 0.28 deg , where detailed observations were performed, contain 170 (detection likelihood $ML>10$), out which 48 had already been by ROSAT. In region recover 23 29 optically selected quasars. 110 classifications core reach completeness ~65%. About one-third are as type II AGN redshifts mostly below 1.0. Furthermore, detect five high redshift ($2.2\le z\le2.8$).
We show that true distribution remains uncertain, since their lack emission lines wide wavelength range hampers identification $1