Blue galaxy with companion
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by martin.hedin
Would this be a big blue galaxy, with a smaller companion?
The bigger galaxy gets structure from the smaller one, and possible arms and starforming blue areas. Somewhat like http://en.wikipedia.org/wiki/Whirlpool_Galaxy.
But why is it so blue in the center? It almost looks like a collision of a much older elliptical galaxy, and a younger blue one, or is this just a chance alignment?
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by ElisabethB moderator
Both galaxies are disturbed, so merger is a possibility.The blue color indicates active star forming activity.
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