Galactic halo substructure
C43593
concept
Galactic halo substructure refers to the smaller, coherent stellar and dark matter components—such as streams, shells, and satellite remnants—embedded within a galaxy’s extended halo that trace its hierarchical assembly history.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| galactic substructure | 1 |
Instances (3)
| Instance | Via concept surface |
|---|---|
| Virgo Overdensity | — |
| Triangulum–Andromeda overdensity | — |
| northeastern disk of M31 | galactic substructure |