On the radial abundance gradients in discs of irregular galaxies

We determine the radial abundance distributions across the discs of 14 irregular galaxies of the types Sm and Im (morphological T types 9 and 10) as traced by their H ii regions. The oxygen and nitrogen abundances in H ii regions are estimated through the Te method or/and with the counterpart method (C method). Moreover, we examine the correspondence between the radial abundance gradient and the s...