ИСТИНА

The low surface brightness (LSB) disc galaxy Malin 2 challenges the standard theory of galaxy evolution because of its enormous total mass ~2x10^12 Msun which must have been formed without recent major merger events. The aim of our work is to create a coherent picture of this exotic object by using new optical multicolour photometric and spectroscopic observations at the Apache Point Observatory as well as archival data sets from Gemini and widefield surveys. Results of our study allowed us to make conclusions about peculiarities of interstellar medium, star formation and evolutionary model for this galaxy.