I am an Assistant Professor in the UCSC Department of Astronomy & Astrophysics.  As an observational astronomer, I specialize in mapping the distribution, properties, and internal structure of galaxies across large cosmic volumes in order to address key questions about their formation and assembly history. My work combines statistical analyses of "Big Data" survey programs with targeted observations from premier facilities, especially Keck Observatory. I am particularly interested in the mechanisms that shut down star formation in galaxies and regulate their growth and assembly.  I am the Principal Investigator of the Keck-FOBOS instrument project, and I lead an initiative at UCSC to develop the field of "Astrophotonics." We are building new tools that will dramatically enhance the capabilities of future instruments.