Go Big or Go Home: Mapping the Largest Structures in the Universe at Redshift One
Roy R. Gal
University of Hawaii, Institute for Astronomy
How do galaxies evolve in different environments? For decades, astronomers have studied the two extremes - the low-density "field" and the very high density cluster cores. However, many processes that can transform galaxies are most efficient in intermediate-density regimes. The Observations of Redshift Evolution in Large Scale Environments (ORELSE) survey examines the large scale structure around 20 high-redshift clusters. With an extensive, multi-wavelength program, we are examining what physical processes trigger and quench star formation, nuclear activity, and morphological changes. I will describe this large survey and some of our recent findings.