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The TESIS project: Are type 2 QSO hidden in X-ray emitting EROs?

P. Severgnini·R. Della Ceca·V. Braito·P. Saracco·M. Longhetti·R. Bender·N. Drory·G. Feulner·U. Hopp·F. Mannucci·C. Maraston
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Abstract

Here we present the results obtained from the analysis of 75 ksec of XMM-Newton observations of a sample of EROs selected from one MUNICS field (K'<19.5 mag). We find 6 EROs with a X-ray counterpart down to a 2--10 keV flux limit of ~10^{-15} cgs. For all of them the X-ray--to--optical flux ratios and the 2--10 keV luminosities suggest the presence of AGN. In particular, a complete X-ray spectral analysis shows that high luminosity, obscured AGNs (i.e. QSO2 candidates) are present in 3 of them.

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P. Severgnini, R. Della Ceca, V. Braito, P. Saracco, M. Longhetti, R. Bender, N. Drory, G. Feulner, U. Hopp, F. Mannucci, C. Maraston. 2003-12-03. The TESIS project: Are type 2 QSO hidden in X-ray emitting EROs?. https://arxiv.org/abs/astro-ph/0312098

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