galactic halo

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Related to Galaxy halo: spiral nebula, Halo star

galactic halo

n.
See halo.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

galactic halo

n
(Astronomy) astronomy a spheroidal aggregation of globular clusters, individual stars, dust, and gas that surrounds the Galaxy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
"This gas is stored and then recycled through an extended galaxy halo, falling back onto the galaxies to reinvigorate a new generation of star formation," he said.
Astronomers have discovered two exoplanets orbiting Kapteyn's Star, a nearby, dim M dwarf in a Milky Way Galaxy halo orbit that likely formed in another galaxy.
These observations appear to confirm that galaxy halos, where they exist, are largely dwarf galaxy graveyards.
We found that the Newton's law in a homogeneous disk shall be multiplied by the coefficient [[eta].sub.disk] estimated to be 7.44 [+ or -] 0.83 at a 99% confidence level, which fills the dark matter gap in galaxy haloes. We conclude that dark matter in spiral galaxies is a problem of geometry, and that Newton's law needs to be corrected to account for the geometry of the mass.
Among the topics are a forming polar ring galaxy in the deep field of the Fornax Cluster, star formation laws in various types of galaxies and the case of polar ring galaxies, kinematic transitions and streams in galaxy halos, and shapes and colors of galaxies from school to science.
It is these stars, the researchers say, that produce the diffuse, blotchy scatterings of light emitted from the galaxy halos that extend well beyond the outer reaches of galaxies.
Washington, October 25 ( ANI ): UC Irvine and other astronomers have challenged previous theories about origins of galaxy halos in the sky.
This longevity suggests that tidal streams should still be observable in galaxy halos.