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Paper: Galaxy Mass Assembly
Volume: 399, Panoramic Views of Galaxy Formation and Evolution
Page: 161
Authors: Dickinson, M.
Abstract: Observations related to star formation and the assembly of galaxy mass at high redshift have accumulated at an astonishing pace during the last few years. In particular, the Spitzer Space Telescope has contributed invaluable data for interpreting star formation and stellar mass content of distant galaxies. I review some aspects of our current knowledge on this topic, concentrating on the prevalence of ultraluminous star formation during the “boom years” of galaxy growth at z ≈ 2, and on stellar masses of galaxies at much earlier times, z > 4. Despite all of these new data, major questions still remain about the physics underlying star formation at z ≈ 2, the possible existence of very massive galaxies at z > 4, and the overall consistency of star formation and stellar mass densities throughout cosmic time.
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