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Dwarf galaxies in the Local Group (LG) represent a distinct as well asdiverse family of tracers of the earliest phases of galaxy assembly and theprocessing resulting from galactic harassment. Their stellar populations can beresolved and used as probes of the evolution of their host galaxy. In thisregard, we present the first reconstruction of the star formation history (SFH)of them using the most evolved AGB stars that are long period variable (LPV).For the nearby, relatively massive and interacting gas-rich dwarf galaxies, theMagellanic Clouds, we found that the bulk of the stars formed ~ 10 Gyr ago forthe LMC, while the strongest episode of star formation in the SMC occurred afew Gyr later. A peak in star formation around 0.7 Gyr ago in both Clouds islikely linked to their recent interaction. The Andromeda satellite pairNGC147/185 show different histories; the main epoch of star formation for NGC185 occurred 8.3 Gyr ago, followed by a much lower, but relatively constantstar formation rate (SFR). In the case of NGC 147, the SFR peaked only 6.9 Gyrago, staying intense until ~ 3 Gyr ago. Star formation in the isolated gas-richdwarf galaxy IC 1613 has proceeded at a steady rate over the past 5 Gyr,without any particular dominant epoch. Due to lack of sufficient data, we haveconducted an optical monitoring survey at the Isaac Newton Telescope (INT) of55 dwarf galaxies in the LG to reconstruct the SFH of them uniformly. Theobservations are made over ten epochs, spaced approximately three months apart,as the luminosity of LPV stars varies on timescales of months to years. Thesystem of galactic satellites of the large Andromeda spiral galaxy (M31) formsone of the key targets of our monitoring survey. We present the first resultsin the And I dwarf galaxy, where we discovered 116 LPVs among over 10,000stars.

The Local Group Dwarf Galaxies: The Star Formation Histories derived using the Long Period Variable stars