ИСТИНА

Dwarf irregular (dIrr) galaxies provide the best environment for studying the influence of supernovae and stellar winds onto the ISM leading to creation of the large HI holes and supershells. Because of the thick gaseous disk, slow solid-body rotation and the lack of strong spiral density waves, these structures grow to a large sizes (up to several kpc) and live longer than in spiral galaxies. The interaction of these HI supershells might trigger a new burst of star formation in a galaxy. We present the results of observational study of the ionized and neutral gas morphology and kinematics in star forming complexes of several nearby dIrr galaxies. Our analysis mainly based on the data obtained with a scanning Fabry-Perot interferometer and narrow band imaging at the 6-m telescope of SAO RAS. We show that the star formation in the observed galaxies mainly take place in the unified complexes with sizes of several hundreds pc inside the rims of giant HI supershells. Signs of star formation propagation within these complexes are observed. We show that for several cases the current star formation probably was triggered by the collision of giant HI supershells. Main results was published in Egorov et al. (2014, 2017, 2018).