Concept information
Terme préférentiel
satellite galaxy
Définition(s)
- A satellite galaxy is a smaller companion galaxy that travels on bound orbits within the gravitational potential of a more massive and luminous host galaxy (also known as the primary galaxy). Satellite galaxies and their constituents are bound to their host galaxy, in the same way that planets within our own solar system are gravitationally bound to the Sun. While most satellite galaxies are dwarf galaxies, satellite galaxies of large galaxy clusters can be much more massive. The Milky Way is orbited by about fifty satellite galaxies, the largest of which is the Large Magellanic Cloud. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Satellite_galaxy)
Concept(s) générique(s)
Traductions
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français
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galaxie compagnon
URI
http://data.loterre.fr/ark:/67375/MDL-LZZN15DT-Q
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