Abstract
We present U and B galaxy number counts from a field that comprises a 0.29 square degrees area of sky, and which covers the Groth-Westphal Strip (Groth et al.,1994). Reached 50% limiting magnitudes are 24.8 magnitudes in U and 25.5 in B in the Vega system, which makes our U number counts to have the biggest area×depth product at the moment. These data are part of the GOYA Survey (Galaxy Origins and Young Assembly), a deep multiband survey whose principal aim is creating a database to provide the NIR multiobjet spectrograph EMIR at GTC with identified samples of galaxies at cosmological distances up to z=3. Preliminary results based on fits of evolutionary codes of galaxy populations to the observed number counts, simultaneously to U, B and K[S] filters, show that an standard -dominated cosmological model reproduces the optical and IR counts better than the Einstein-de Sitter one.
