Astrophysics (index)

Dwarf Galaxy

(small galaxy with a few billion stars)

The term Dwarf Galaxy is used for galaxies much smaller than the Milky Way, i.e., of a few billion stars at most, and as small as 100 parsecs across. They can be any of the normal galaxy types, e.g., spiral. Often they are Satellite Galaxies.

Some more specific terms:

  • Blue Compact Dwarf Galaxy - with young hot stars.
  • Ultra-Compact Dwarf Galaxy - in the 100-Parsec range.
  • Hobbit Galaxy - small, faint dwarf galaxy.

Examples (in Local Group):

(galaxy type)

Referenced by:
Galaxy Group
Hierarchical Assembly of Galaxies
Local Group (LG)
Low-Surface-Brightness Galaxy (LSB Galaxy)
Satellite Galaxy
TiNy Titans (TNT)
Triangulum II (Tri II)
Ultra-Faint Dwarf Galaxy (UFD)