X-ray luminosity functions of different morphological and X-ray type AGN populations

Pović, M.; Pérez-García, A. M.; Sánchez-Portal, M.; Bongiovanni, A.; Cepa, J.; Fernández-Lorenzo, M.; Lara-López, M. A.; Gallego, J.; Ederoclite, A.; Márquez, I.; Masegosa, J.; Alfaro, E.; Castañeda, H.; González-Serrano, J. I.; González, J. J.
Referencia bibliográfica

Astronomische Nachrichten, Vol.334, Issue 3, p.288

Fecha de publicación:
3
2013
Número de autores
15
Número de autores del IAC
5
Número de citas
0
Número de citas referidas
0
Descripción
Luminosity functions are one of the most important observational clues when studying galaxy evolution over cosmic time. In this paper we present the X-ray luminosity functions for X-ray detected AGN in the SXDS and GWS fields. The limiting fluxes of our samples are 9.0 ×10-15 and 4.8 ×10-16 erg cm-2 s-1 in the 0.5-7.0 keV band in the two fields, respectively. We carried out analysis in three X-ray bands and in two redshift intervals up to z≤1.4. Moreover, we derive the luminosity functions for different optical morphologies and X-ray types. We confirm strong luminosity evolution in all three bands, finding the most luminous objects at higher redshift. However, no signs of density evolution are found in any tested X-ray band. We obtain similar results for compact and early-type objects. Finally, we observe the ``Steffen effect'', where X-ray type-1 sources are more numerous at higher luminosities in comparison with type-2 sources.
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