Interaction between smaller neighbour also

https://www.legacysurvey.org//viewer/?ra=184.5851&dec=29.2502&layer=ls-dr9&zoom=15

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Just asking if that blue is some sort of telescopic artifact

I don’t think it’s an artifact – appears in multiple g-band images, and actually even from different telescopes! Very striking, though!

Checked the SIES, it is real. Probably some sort of emission from the center

Very vibrant looking ionized gas!

Okay thanks for the answer.