Margaret Geller

HectoMAP combines data from two of the world’s largest telescopes to map the universe at ages & 7.5 Gyr. Hectospec on the MMT provides redshifts and other spectroscopic measurements. Hyper Suprime-Cam on Subaru provides spectacular imaging over the entire 53 square degree strip. HectoMAP includes more than 2000 galaxy redshifts per square degree. The survey focuses on quiescent galaxies and the way they trace the cosmic web. The high survey density enables exploration of the most massive galaxies, brightest cluster galaxies (BCGs), and their environments. More than 500 BCGs and their home clusters test of theories of galaxy and structure formation.