ИСТИНА

Models of galaxy formation in the early Universe require understanding how feedback affects the interstellar medium in a low metallicity environment. The similar metallicity is observed in dwarf galaxies which are great laboratories for such studies. With high spectral resolution (R=16000) scanning Fabry-Perot interferometer (FPI) at BTA SAO RAS we investigate the ionised gas kinematics in nearby star-forming dwarf galaxies and measure the energetics of the superbubbles created by stellar feedback in these galaxies. Supplemental spectroscopic or imaging observations provide insights into the dominant mechanism of stellar feedback (SN, stellar wind, thermal pressure) in the studied objects. High spectral resolution and wide field of view of FPI allows efficient identification of the stellar objects with high mechanical luminosity (e.g. candidates to WR or LBV stars). I will present some of our recent results and mention the difficulties in their analysis and interpretation that would be solved if the 3D spectrograph with all necessary characteristics (high spectral resolution, wide spectral range and sufficiently large field of view) is available.