Abstract
CALIFA is a spectroscopic survey of 600 nearby galaxies (0.005 < z < 0.03). CALIFA provides a unique and very useful set of data for galaxies covering the color-magnitude diagram from Mr = -23 mag to Mr = -18 mag, a large range of masses (109-12 M_{odot}) and morphological types (from E to Sc), and allow us to obtain the spatially resolved properties of galaxies. The spectral range of the CALIFA sample is ideal for studying stellar populations because it contains the Balmer series and the 4000 Å break, among other useful tracers. However, there are age-metallicity-extinction degeneracies, which produce uncertainties in estimation of the physical properties of the stellar population. So we combine CALIFA spectroscopic data with photometric data in the ultraviolet range obtained with the GALEX mission in order to break these degeneracies, including data that provide additional information about the young stellar populations, which contribute to a lesser extent in the optical range. We perform a full spectral synthesis at the optical range plus the two UV GALEX filters with a new version of the fitting code STARLIGHT.
