Merger Signatures are Common, but not Universal, in Massive, Recently Quenched Galaxies at z ∼ 0.7

We present visual classifications of merger-induced tidal disturbances in 143 $\rm{M}_* \sim 10^{11}\rm{M}_\odot$ post-starburst galaxies at z$\sim$0.7 identified the SQuIGG$\vec{L}$E Sample. This sample spectroscopically selects from Sloan Digital Sky Survey that have stopped their primary epoch star formation within past $\sim$500 Myrs. Visual are performed on Hyper Suprime Cam (HSC) i-band imaging. compare to a control mass- and redshift-matched star-forming quiescent Large Early Galaxy Census find more likely be classified as disturbed than either category. corresponds factor $3.6^{+2.9}_{-1.3}$ times disturbance rate older $2.1^{+1.9}_{-.73}$ galaxies. Assuming features persist for $\lesssim500$ Myr, this suggests merging is coincident with quenching significant fraction these post-starbursts. Galaxies younger average undisturbed our sample, suggesting major merger may faded over time. exacerbated by fact that, average, subset fainter, rendering low surface brightness harder identify. However, presence ten young ($\lesssim150$ Myr since quenching) mergers not only fast physical mechanism shut down massive intermediate redshift.