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We investigate the resolved star formation properties of a sample of 45massive galaxies (M_*>10^11M_solar) within a redshift range of 1.5 < z < 3detected in the GOODS NICMOS Survey (Conselice et al. 2011), a HST H-bandimaging program. We derive the star formation rate as a function of radiususing rest frame UV data from deep z_{850} ACS imaging. The star formationpresent at high redshift is then extrapolated to z=0, and we examine thestellar mass produced in individual regions within each galaxy. We alsoconstruct new stellar mass profiles of the in-situ stellar mass at highredshift from Sersic fits to rest-frame optical, H_{160}-band, data. We combinethe two stellar mass profiles to produce a modelled evolved stellar massprofile. We then fit a new Sersic profile to the evolved profile, from which weexamine what effect the resulting stellar mass distribution added via starformation has on the structure and size of each individual galaxy. We concludethat due to the lack of sufficient size growth and Sersic evolution by starformation other mechanisms such as merging must contribute a large proportionto account for the observed structural evolution from z>1 to the present day.

Evolution of Massive Galaxy Structural Properties and Sizes via Star Formation