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The HELLAS2XMM survey.VIII. Optical identifications of the extended sample

F. Cocchia·F. Fiore·C. Vignali·M. Mignoli·M. Brusa·A. Comastri·C. Feruglio·A. Baldi·N. Carangelo·P. Ciliegi·V. D'Elia·F. La Franca·R. Maiolino·G. Matt·S. Molendi·G. C. Perola·S. Puccetti
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Abstract

(Abridged) We present the results of the photometric and spectroscopic identification of 110 hard X-ray selected sources (6e-15 1000, while their Lx, L(R) and Nh are similar. This suggests that while the central engine of narrow-line AGNs and XBONGs looks similar, the narrow-line region in XBONGs could be strongly inhibited or obscured.

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F. Cocchia, F. Fiore, C. Vignali, M. Mignoli, M. Brusa, A. Comastri, C. Feruglio, A. Baldi, N. Carangelo, P. Ciliegi, V. D'Elia, F. La Franca, R. Maiolino, G. Matt, S. Molendi, G. C. Perola, S. Puccetti. 2006-12-01. The HELLAS2XMM survey.VIII. Optical identifications of the extended sample. https://doi.org/10.1051/0004-6361%3A20065170

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