Astrophysics (Index)About

galactic halo

(spherical region around a galaxy with gas, dark matter, etc.)

A galactic halo is a region around the visible part (bulk of the stars) of a galaxy, comprising of less visible parts of the same gravitationally-bound structure. The galactic halo includes:

(Note in some phrases, the word galactic is taken to imply our galaxy, Milky Way, but the phrase galactic halo has been applied to galaxies in general.)

(galaxies,dark matter,plasma)
Further reading:

Referenced by pages:
astronomical quantities
elliptical galaxy
galactic disk
giant elliptical galaxy
Gould's Belt
H3 Survey (H3)
Hydrogen Accretion in Local Galaxies Survey (HALOGAS)
high-velocity star
high-velocity cloud (HVC)
MACHO Project
Magellanic Stream
Orphan stream
Polar-ring Catalog (PRC)
Smith Cloud
stellar stream