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galactic halo
galactic halo Any material in a roughly spherical distribution around a galaxy, and extending out to beyond the visible regions. It can refer to a population of old (Population II) stars, including globular clusters, with little or no rotation about the galactic centre; to tenuous, highly ionized, high-temperature gas (106 K) around a galaxy; or to an extended distribution of invisible dark matter.
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"galactic halo." A Dictionary of Astronomy. 1997. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "galactic halo." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O80-galactichalo.html "galactic halo." A Dictionary of Astronomy. 1997. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-galactichalo.html |
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halo, galactic
halo, galactic See galactic halo.
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Cite this article
"halo, galactic." A Dictionary of Astronomy. 1997. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "halo, galactic." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O80-halogalactic.html "halo, galactic." A Dictionary of Astronomy. 1997. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-halogalactic.html |
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