Naveen Reddy

Title: Evolution of Dust Obscuration and Its Implications for Galaxy
Growth

Abstract: I will review recent work to constrain the star formation
history of the Universe based on UV measurements, and will discuss
what we have learned about the dust properties of typical star-forming
galaxies at high redshift.  In particular, I will briefly summarize
our results on the UV luminosity function at redshifts z~2-3; the
steep faint-end slope at these redshifts has interesting implications
for the shape of the galaxy stellar mass function and budget of total
stellar mass at high redshift.  I will focus on how dust obscuration
evolves with bolometric and UV luminosity, redshift, stellar
population age, and metallicity.  I show that evolution in the
luminosity function and dust obscuration significantly impacts our
understanding of the cosmic star formation history and its
reconciliation with the buildup of stellar mass at early epochs.