##### AUTHOR ####
Alberto Dominguez

##### TITLE ####
Extragalactic Background Light inferred from spectral-type fractions

##### ABSTRACT ####
We derive the evolving, overall spectrum of the Extragalactic
 Background Light (EBL) between 0.1 - 1000 um utilizing a novel method based
 on observations only. We use the observed evolution over redshift of the
 K-band galaxy luminosity function by Cirasuolo et al. (2009), as well
 as an estimation on spectral-type fractions, in the redshift range from
0.2 to 1, using a multiwavelength sample of about 6000 galaxies from the
 All-wavelength Extended Groth Strip International Survey (AEGIS). We
 derive fractions of red, blue, starburst galaxies and active galactic
 nuclei in that redshift range. We compare our EBL estimates with that from
 semi-analytics models, and discuss the consequences for attenuation of
very high energy photons sources due to the EBL.