The Morphological Origin of Dwarf Galaxies

TL;DR

This paper reviews the morphological origins and evolutionary processes of dwarf galaxies, emphasizing environmental influences and transformations, based on observational evidence and theoretical considerations.

Contribution

It provides a comprehensive review of the morphological types of dwarf galaxies and discusses the processes affecting their evolution, highlighting the role of environment.

Findings

Environmental effects deplete gas-rich irregular dwarf galaxies.

Morphological transformations are influenced by various environmental processes.

Observational characteristics help trace evolutionary paths of dwarf galaxies.

Abstract

Dwarf galaxies (DGs) serve as extremely challenging objects in extragalactic astrophysics. Their origin is expected to be set as the first units in CDM cosmology. Nevertheless they are the galaxy type most sensitive to environmental in uences and their division into multiple types with various properties have invoked the picture of their variant morphological transformations. Detailed observations reveal characteristics which allow to deduce the evolutionary paths and to witness how the environment has affected the evolution. Here we refer to general morphological DG types and review some general processes, most of which deplete gas-rich irregular DGs. Moreover, the variety of pecularities is brie y refered, but cannot be comprehensively analyzed because of limited paper space.