Distant galaxies interacting?


Yes, those two galaxies are almost certainly interacting, producing those perturbations.

If you flip over to the Legacy Surveys DR9 you’ll see the nice colors. SDSS has a spectrum of one of them at z=0.09 (1.2 billion light-years).

Thank you for the reply! 1.2 billion light-years… so maybe they are no longer interacting now, or they have merged.