Variable stars in nearby galaxies - IV. Fields C and D of IC 1613

The nearby galaxies IC 1613 and NGC 6822 were observed over four years to d etect short period Cepheids and to obtain good light curves for Fourier dec omposition. The program was: carried out with a relatively small telescope, the Dutch 0.9 m at ESO-La Silla, and the observations were performed witho ut filter (white light), or Wh-band. In this paper we present the results o f the observations of Fields C and D in IC 1613 (3'.8 x 3'.8 each). The ana lysis of the light curves of 3297 stars in the two fields has allowed the d etection of 92 variable stars. A total of 34 Population I Cepheids have bee n found, while only 7 of these objects were previously known in these field s. Most of the stars have short periods and some of them are first overtone mode pulsators. Among tile other variable stars there are one eclipsing bi nary and five W Vir candidates. A nova event was observed in Field D.