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Chemical evolution models (CEM) are important tools to understand theformation and evolution of the components of the Milky Way Galaxy and othergalaxies in the universe. The Galactic bulge is the only galaxy bulge that canbe resolved and can be studied with exquisite details. In this way, the bulgemetallicity distribution function (MDF) can be traced for different regionswithin the bulge and can give us clues about the bulge formation scenario. Inthis work we have assumed an inside-out formation for the Galactic bulge andusing a CEM we were able to compute the chemical evolution in nine differentradial regions, from 0 to 2 kpc, in steps of 0.25 kpc . The preliminary resultsshow that in the inner regions of the bulge the MDF is skewed to highermetallicities, while at the outer regions there is a metal rich component butalso a metal poor component much more extended than in the inner regions. Theseresults may explain the metallicity gradient observed in the Galactic bulge.

The formation of the Galactic bulge in an inside-out scenario