ИСТИНА

We present the results of the ongoing survey at the 6-m telescope of SAO RAS aimed to analyse the gas morphology, kinematics and ionization state in the nearby dwarf galaxies (in particular - in the M81 group). A proximity of such galaxies, a thickness of their gaseous disks and a lack of spiral density waves allow one to analyze the interaction between massive stars in star-forming regions and surrounding ISM in details. We used the observational data obtained with a scanning Fabry-Perot interferometer in H-alpha and [SII] emission lines to study the ionized gas kinematics with high spectral (~20 km/s) and spatial (~20-50 pc) resolutions. A multi-component or asymmetrical broadened line profiles are observed in many of star-forming regions and most probably related to the influence of stellar winds and supernovae. At the same time a complex kinematics of the ionized gas is also observed far from the young star clusters that points to the importance of the energy leakage and shock waves propagation as a driver of turbulence of the ISM, in particular - in the diffuse ionized gas. An analysis of the ionized gas velocity dispersion allowed us to identify a number of point-like emission sources having peculiar spectroscopic properties and probably highly influencing the surrounding ISM.