Stellar Populations and Star-Formation of Clumps in Gas-Rich, Turbulent Galaxies

This PhD thesis investigates the properties of massive star-forming clumpy galaxies in the distant past (1 < z < 3) using the Dynamics of Newly-Assembled Massive Object sample as an analogue for z ~ 2 galaxies. The properties of clumps are measured using Hubble Space Telescope observations. Results are used to test different feedback models, theories of clump origin, and investigate clump lifetime. Understanding the lifetime of giant clumps in these galaxies is crucial for the evolution of galaxies and building present-day galaxies, as more than 50% of the stars in the Universe were formed in galaxies at this epoch.