Faint disruption, what is it caused by?

https://decaps.legacysurvey.org//viewer/?ra=304.8846&dec=-65.6602&layer=ls-dr10&zoom=13

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That looks like a tidal interaction tail
(https://en.wikipedia.org/wiki/Tidal_tail)
coming from a galaxy-galaxy interaction – a small galaxy getting torn apart as it merges with the larger one, due to tidal forces.

cheers,
dustin

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