The XMM‐Newton Wide‐Field Survey in the COSMOS Field. IV. X‐Ray Spectral Properties of Active Galactic Nuclei | Zendy

V. Mainieri | Zendy; G. Hasinger | Zendy; N. Cappelluti | Zendy; M. Brusa | Zendy; H. Brunner | Zendy; F. Civano | Zendy; A. Comastri | Zendy; M. Elvis | Zendy; A. Finoguenov | Zendy; F. Fiore | Zendy; R. Gilli | Zendy; I. Lehmann | Zendy; J. D. Silverman | Zendy; L. A. M. Tasca | Zendy; C. Vignali | Zendy; G. Zamorani | Zendy; E. Schinnerer | Zendy; C. Impey | Zendy; J. Trump | Zendy; S. J. Lilly | Zendy; C. Maier | Zendy; R. E. Griffiths | Zendy; T. Miyaji | Zendy; P. Capak | Zendy; Anton M. Koekemoer | Zendy; N. Z. Scoville | Zendy; P. L. Shopbell | Zendy; Yoshiaki Taniguchi | Zendy

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The XMM‐Newton Wide‐Field Survey in the COSMOS Field. IV. X‐Ray Spectral Properties of Active Galactic Nuclei

Author(s) -

V. Mainieri,

G. Hasinger,

N. Cappelluti,

M. Brusa,

H. Brunner,

F. Civano,

A. Comastri,

M. Elvis,

A. Finoguenov,

F. Fiore,

R. Gilli,

I. Lehmann,

J. D. Silverman,

L. A. M. Tasca,

C. Vignali,

G. Zamorani,

E. Schinnerer,

C. Impey,

J. Trump,

S. J. Lilly,

C. Maier,

R. E. Griffiths,

T. Miyaji,

P. Capak,

Anton M. Koekemoer,

N. Z. Scoville,

P. L. Shopbell,

Yoshiaki Taniguchi

Publication year - 2007

Publication title -

the astrophysical journal supplement series

Language(s) - English

Resource type - Journals

eISSN - 1538-4365

pISSN - 0067-0049

DOI - 10.1086/516573

Subject(s) - physics , astrophysics , spectral index , photon , active galactic nucleus , power law , field (mathematics) , absorption (acoustics) , spectral line , spectral slope , galaxy , astronomy , optics , statistics , mathematics , pure mathematics

We present a detailed spectral analysis of point-like X-ray sources in the XMM-COSMOS field. Our sample of 135 sources only includes those that have more than 100 net counts in the 0.3-10 keV energy band and have been identified through optical spectroscopy. The majority of the sources are well described by a simple power-law model with either no absorption (76%) or a significant intrinsic, absorbing column (20%).As expected, the distribution of intrinsic absorbing column densities is markedly different between AGN with or without broad optical emission lines. We find within our sample four Type-2 QSOs candidates (L_X > 10^44 erg/s, N_H > 10^22 cm^-2), with a spectral energy distribution well reproduced by a composite Seyfert-2 spectrum, that demonstrates the strength of the wide field XMM/COSMOS survey to detect these rare and underrepresented sources.

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