Understanding the Extreme Classes of Dwarf Galaxies

Most of the research on dwarf galaxies in the past has focused on the detailed properties of nearby systems or the most commonly occurring types of dwarfs. Alternatively, exceptional insight into these objects is gained through studying the most extreme examples. Therefore, this PhD research focuses on two extreme classes of dwarf galaxies, ultra-diffuse galaxies (UDGs) and ultra-compact dwarf galaxies (UCDs); UDGs as the most diffuse and UCDs as the most compact classes of dwarf galaxies. These two classes have raised several issues and open questions in the last years which challenge our understanding of dwarf galaxies, dark matter and in general, galaxy formation and evolution.