Spectral energy distributions of a hard X-ray selected AGN sample in the EGS.

Ramos Almeida, C.; Rodríguez Espinosa, J. M.; Barro, G.; Gallego, J.; Pérez-González, P. G.
Referencia bibliográfica

Memorie della Società Astronomica Italiana, v.79, p.1034 (2008)

Fecha de publicación:
0
2008
Número de autores
5
Número de autores del IAC
2
Número de citas
0
Número de citas referidas
0
Descripción
We present ultraviolet to mid-infrared spectral energy distributions for a sample of 116 AGN in the Extended Groth Strip selected both in the X-rays and mid-infrared (96 with single detections and 20 with multiple optical counterparts). A complete set of different AGN types and starburst galaxy templates are used to fit the objects spectral energy distributions. Five main template groups are considered, namely, Starburst-dominated AGN (24 % of the sample), Starburst-contaminated AGN (7 %), Type-1 AGN (21 %), Type-2 AGN (24 %), and Normal galaxy hosting AGN (24 %). Type-2 AGN and Normal galaxy hosting AGN sources are concentrated at low redshifts, whereas Starburst-dominated AGN and Type-1 AGN show a larger span. Correlations between hard/soft X-ray and ultraviolet, optical and infrared luminosities, respectively, are reported, showing a noticeable improvement when only Type-1 AGN-fitted objects are considered. For the rest of the populations, these correlations get worse when we consider the soft X-ray instead of the hard X-rays, probably due to the higher obscuration that affects the objects in these populations. The percentage of Starburst-dominated AGN objects amongst the subset of objects with double detections increases up to 48%.