The XMM-Newton wide-field survey in the COSMOS field. The point-like X-ray source catalogue - Astrophysics > High Energy Astrophysical PhenomenaReportar como inadecuado




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Abstract: The COSMOS survey is a multiwavelength survey aimed to study the evolution ofgalaxies, AGN and the large scale structure. The XMM-COSMOS is a deep X-raysurvey over the full 2 deg2 of the COSMOS area. It consists of 55 XMM-Newtonpointings for a total exposure of ~1.5 Ms with an average vignetting correcteddepth of 40 ks across the field of view and a sky coverage of 2.13 deg2. Wepresent the catalogue of point-like X-ray sources detected with the EPIC CCDcameras, the logN-logS relations and the X-ray colour-colour diagrams. Theanalysis was performed in the 0.5-2 keV, 2-10 keV and 5-10 keV energy bands.The completeness of the catalogue as well as logN-logS have been calibratedusing Monte Carlo simulations. The catalogs contains a total of 1887 uniquesources detected in at least one band. The survey, that shows unprecedentedhomogeneity, has a flux limit of ~1.7x10-15 erg cm-2 s-1, ~9.3x10-15 erg cm-2s-1 and ~1.3x10-14 erg cm-2 s-1 over 90% of the area 1.92 deg2 in the 0.5-2keV, 2-10 keV and 5-10 keV energy band, respectively. Thanks to the ratherhomogeneous exposure over a large area, the derived logN-logS relations arevery well determined over the flux range sampled by XMM-COSMOS. These relationshave been compared with XRB synthesis models, which reproduce the observationswith an agreement of ~10% in the 5-10 keV and 2-10 keV band, while in the 0.5-2keV band the agreement is of the order of ~20%. The hard X-ray colors confirmedthat the majority of the extragalactic sources, in a bright subsample, areactually Type I or Type II AGN. About 20% of the sources have X-ray luminositytypical of AGN L X >1042 erg-s although they do not show any clear signatureof nuclear activity in the optical spectrum.



Autor: N. Cappelluti, M. Brusa, G. Hasinger, A. Comastri, G. Zamorani, A. Finoguenov, R. Gilli, S. Puccetti, T. Miyaji, M. Salvato, C. V

Fuente: https://arxiv.org/







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