The Dwarfs Beyond: Relating Stellar and Halo Mass in Dwarf Galaxies to z ~ 1

Do the kinematics and mass profiles of dwarf galaxies present a fundamental challenge to standard cold dark matter (CDM) models? New, deep spectroscopy using DEIMOS on Keck for hundreds of low stellar mass (10 7 -10 9 M ⊙ star-forming galaxies at intermediate redshift (0.2 7 M ⊙ , and a persistent discrepancy is found between predictions from simulations and models compared to our observations. We suggest on-going and future tests that will be more effective in distinguishing between the effects of baryonic feedback and alternative models of dark matter in this remarkable regime.