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Interaction of Galaxies


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Interaction of Galaxies

Gravitational interactions between galaxies are far more common than one might think assuming that the space density of galaxies is uniform. The galaxies are grouped into clusters, small groups, or pairs: far from being isolated systems they are formed and evolve in interaction with their environment and in particular with neighbouring galaxies. The gravitational interactions produce giant tidal waves in the discs of the galaxies, giving rise to spiral arms and provoking outbursts of star formation. Collisions between galaxies could contribute to the activity at the nuclei of radio galaxies and quasars.    [Ref  6]

Interacting Galaxies (6 images)
Antennae 
Antennae 
Antennae 
Antennae 
HCG 16 
HCG 16 
M 51 
M 51 
M51 
M51 
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Groups of Galaxies (5 images)
HCG 16 
HCG 16 
HCG 16 
HCG 16 
NGC 5044 
NGC 5044 
Stephan's Quintet 
Stephan's Quintet 
[FGH2007] 99  
[FGH2007] 99  

Clusters of Galaxies (30 images)
1WGA J2235.3-2557 
1WGA J2235.3-2557 
2A 0335 096 
2A 0335 096 
2A 0335 096 
2A 0335 096 
2XMM J083026.2 524133 
2XMM J083026.2 524133 
Abell 1644 
Abell 1644 
more >




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XMM-Newton; Europe's X-Ray Observatory
Last update: 17-Oct-2012 by