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We investigate two-dimensional image decomposition of nearby, morphologicallyselected early-type galaxies (ETGs). We are motivated by recent observationalevidence of significant size growth of quiescent galaxies and theoreticaldevelopment advocating a two-phase formation scenario for ETGs. We find that asignificant fraction of nearby ETGs show changes in isophotal shape thatrequire multi-component models. The characteristic sizes of the inner and outercomponent are $\sim 3$ and $\sim 15$ kpc. The inner component lies on themass-size relation of ETGs at $z \sim 0.25-0.75$, while the outer componenttends to be more elliptical and hints at a stochastic buildup process. We findreal physical differences between the single- and double-component ETGs, withthe double-component galaxies being younger and more metal-rich. The fractionof double component ETGs increases with increasing $\sigma$ and decreases indenser environments. We hypothesize that double-component systems were able toaccrete gas and small galaxies until later times, boosting their centraldensities, building up their outer parts, and lowering their typical centralages. In contrast, the oldest galaxies, perhaps due to residing in richerenvironments, have no remaining hints of their last accretion episode.

Testing the presence of multiple photometric components in nearby early-type galaxies using SDSS