ИСТИНА

Galactic discs are composed of different substructures generally rotating in the same direction. However, there are known cases where galaxies hosting two prominent stellar counter-rotating (CR) discs. The formation of such substructures as well as their influence on galaxy evolution is still not fully understood. Here we present a detailed investigation of one galaxy from MaNGA survey -- PGC 066551 which also has been followed up with deep long-slit spectroscopy at 11m SALT telescope (South Africa). Applying full-spectral fitting and non-parametrical stellar LOSVD recovery technique we found that secondary counter-rotating disc contributes ~50% in the integral light. The dark halo of this galaxy was also studied along the rotation curve, and a chemical evolution model was created that describes the evolution of the galaxy. We are confident in the appearance of AGN in the life of the galaxy, and also determined the scenario for the formation of the CR disk.