Connecting simulations and observations in galaxy formation studies Observational and computational extragalactic astrophysics are two fields of research that study a similar subject from different perspectives. Observational extragalactic astrophysics aims by recovering the spectral energy distribution of galaxies at different wavelengths to reliably measure their properties at different cosmic times and in a large variety of environments. Analyzing the light collected by the instruments observers try to disentangle the different processes occurring in galaxies at the scales of galactic physics as well as the effect of larger scale processes such as mergers and accretion in order to obtain a consistent picture of galaxy formation and evolution. On the other hand hydrodynamical simulations of galaxy formation in cosmological context are able to follow the evolution of a galaxy along cosmic time taking into account both external processes such as mergers interactions and accretion and internal mechanisms such as feedback from Supernovae and Active Galactic Nuclei. Due to the great advances in…