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We present the Star Formation History (SFH) and the age-metallicity relation(AMR) in three fields of the Fornax dwarf spheroidal galaxy. They sample aregion spanning from the centre of the galaxy to beyond one core radius, whichallows studying galactocentric gradients. In all the cases, we found stars asold as 12 Gyr, together with intermediate-age and young stellar populations.The last star formation events, as young as 1 Gyr old, are mainly located inthe central region, which may indicate that the gas reservoir in the outerparts of the galaxy would have been exhausted earlier than in the centre orremoved by tidal interactions. The AMR is smoothly increasing in the threeanalyzed regions and similar to each other, indicating that no significantmetallicity gradient is apparent within and around the core radius of Fornax.No significant traces of global UV-reionization or local SNe feedback areappreciated in the early SFH of Fornax.  Our study is based on FORS1@VLT photometry as deep as I~24.5 and theIAC-star/IAC-pop/MinnIAC suite of codes for the determination of the SFH inresolved stellar populations.

Spatial dependence of the Star Formation History in the Central Regions of the Fornax Dwarf Spheroidal Galaxy