LBG properties from z~3 to z~6
  We analyse the spectral energy distribution (SED) of U, B, V and i-dropout
samples from GOODS-MUSIC and we determine their physical properties, such as
stellar age and mass, dust attenuation and star formation rate (SFR).
Furthermore, we examine how the strength of Ly{\alpha} emission can be
constrained from broad-band SED fits instead of relying in spectroscopy. We use
our SED fitting tool including the effects of nebular emission and we explore
different star formation histories (SFHs). We find that SEDs are statistically
better fitted with nebular emission and exponentially decreasing star
formation. Considering this result, stellar mass and star formation rate (SFR)
estimations modify the specific SFR (SFR/Mstar) - redshift relation, in
comparison to previous studies. Finally, our inferred Ly{\alpha} properties are
in good agreement with the available spectroscopic observations.
