ИСТИНА

Stellar feedback plays an important role in regulation of the structure and kinematics of interstellar medium. Multiple stellar winds and supernovae explosions create large holes and superbubbles in the ISM with sizes varying from several pc to several kpc, which were detected in many nearby galaxies. The interaction of these superbubbles may trigger the new episode of star formation, while an intensive starburst could cause a development of the galaxy-wide outflows. Dwarf irregular galaxies are particularly important as testbed for studying the interaction between massive stars and ISM - a lack of spiral waves and the thick gaseous disks allow the feedback-driven structures to develop better and survive longer. Here I report our recent observational studies of the ionized gas in a sample of nearby (D<10 Mpc) dIrr galaxies. In our study we focus on the morphology and kinematics of ionized gas in star-forming regions and beyond them, in particular - on the presence of the supersonic motions in ISM and on the signs of triggering of star formation. I also introduce the SIGMA-FPI archive which will contain the data cubes in Halpha line and results of their analysis for about 100 nearby dwarf galaxies observed at the Russian 6-m telescope BTA with a scanning Fabry-Perot interferometer providing the high spectral resolution R~16000.