Weak lensing shows post-merger and non-merging galaxies have indistinguishable mass profiles, ruling out merger starbursts that form more than 60% of the final stellar mass.
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Unions with UNIONS: Using galaxy-galaxy lensing to probe galaxy mergers
Weak lensing shows post-merger and non-merging galaxies have indistinguishable mass profiles, ruling out merger starbursts that form more than 60% of the final stellar mass.