Galactic halos
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מספר מערכת
987007553719705171
Information for Authority record
Name (Hebrew)
הילות גלקטיות
Name (Latin)
Galactic halos
Name (Arabic)
הילות גלקטיות
Other forms of name
Halos, Galactic
See Also From tracing topical name
Astrophysics
MARC
MARC
Other Identifiers
Sources of Information
- Work cat.: International Astronomical Union. Symposium (144th : 1990 : Leiden, Netherlands). Interstellar disk-halo connection in galaxies : proceedings ... 1991.
- Gloss. astron. astrophysics
- Facts file dict. astron.:
- NASA
- Dict. astron., space atmos. phen.
- Random House
- Encyc. astron. astrophysics:
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NGC 3923 Elliptical Shell Galaxy
NASA/ESA Hubble Space telescope, Public domain
File:Earth-moon.jpg
Apollo 8 crewmember Bill Anders, Public domain
File:He1523a.jpg
ESO, European Southern Observatory, CC BY 4.0
File:Solar system.jpg
NASA/JPL, Public domain
Wikipedia description:
A galactic halo is an extended, roughly spherical component of a galaxy which extends beyond the main, visible component. Several distinct components of a galaxy comprise its halo: the stellar halo the galactic corona (hot gas, i.e. a plasma) the dark matter halo The distinction between the halo and the main body of the galaxy is clearest in spiral galaxies, where the spherical shape of the halo contrasts with the flat disc. In an elliptical galaxy, there is no sharp transition between the other components of the galaxy and the halo. A halo can be studied by observing its effect on the passage of light from distant bright objects like quasars that are in line of sight beyond the galaxy in question.
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