| Understanding how galaxies observed in the universe coevolve with their dark matter halos is fundamental. Robust observations of basic galaxy properties as a function of time combined with an observable property linking galaxies to their theoretical dark matter halos are the foundation for tackling this problem. Stellar velocity dispersions are an observable proxy that directly connects quiescent galaxies to their dark matter halos independent of the simulations. This connection sheds light on the coevolution of galaxies and dark matter halos and points the way to the next generation of insights. A missing link for a unified empirical model of galaxy-halo coevolution is the connection between star-forming and quiescent galaxies. Stellar metallicities measured from high-quality spectroscopy can provide such a connection. The Prime Focus Spectrograph on Subaru combined with imaging data from space will transform our understanding of the coevolution of galaxies and dark matter halos over the last 10 billion years of cosmic history. I envision a coevolution revolution centered at Hawaii. |