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ИСТИНА ЦЭМИ РАН |
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Many galaxies contain kinematically decoupled structures of different types, one such a type being counterrotating stellar discs. Recently, full-spectral fitting techniques have been exploited to extract kinematical features and stellar population properties of counter-rotating discs from integrated light spectra of galaxies. Studies of stellar counter-rotating components in disc galaxies shed light on processes of accretion and mergers which are thought to be responsible for their formation. I will review recent results in this field and present couple examples of our study of counter-rotation in disc galaxies. I will pay special attention to the comparison of two independent approach – spectral decomposition and photometrical analysis in case of NGC 448 where we demonstrated a perfect agreement between them. Finally, I am going to discuss prospectives of study of counter-rotation phenomena from the IFU surveys (SAMI, MANGA) point of view.