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Nice work!
My initial impression is that your image of the tidal tails is deeper than I usually see. Can you stretch it even further??
Note the knots at the end of one of the tidal tails of
NGC 4038/9. There is abundant formation of very luminous and massive stars going on here, well outside the main bodies of the galaxies.
Some professional astronomers believe that dwarf galaxies can form in tidal tails. These galaxies, as you would expect, are called Tidal Dwarfs.
Way back in the 1970s, Ken Freeman and
Gerard de Vaucouleurs wrote a paper about NGC 4027 showing that one-armed features can form due to interactions of a spiral or irregular galaxy with a lower mass companion.
cheers, madbadgalaxyman
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