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Tidal debris around galaxies can yield important clues on their evolution. Wehave identified tidal debris in 11 early type galaxies (T \leq 0) from a sampleof 65 early types drawn from the Spitzer Survey of Stellar Structure inGalaxies (S4G). The tidal debris includes features such as shells, ripples andtidal tails. A variety of techniques, including two-dimensional decompositionof galactic structures, was used to quantify the residual tidal features. Thetidal debris contributes ~3 - 10% to the total 3.6 {\mu}m luminosity of thehost galaxy. Structural parameters of the galaxies were estimated usingtwo-dimensional profile fitting. We investigate the locations of galaxies withtidal debris in the Fundamental Plane and Kormendy relation. We find thatgalaxies with tidal debris lie within the scatter of early type galaxieswithout tidal features. Assuming that the tidal debris is indicative of recentgravitational interaction or merger, this suggests that these galaxies haveeither undergone minor merging events so that the overall structural propertiesof the galaxies are not significantly altered, or they have undergone a majormerging events but already have experienced sufficient relaxation andphase-mixing so that their structural properties become similar to those of thenon-interacting early type galaxies.

Early type galaxies with tidal debris and their scaling relations in the Spitzer Survey of Stellar Structure in Galaxies (S4G)