Applying a realistic surface brightness cutoff to simulated ultra-faint galaxies shrinks their inferred sizes and masses, improves agreement with observed dwarfs, but biases dynamical mass estimates so that dark matter densities are overestimated.
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How invisible stellar halos bias our understanding of ultra-faint galaxies
Applying a realistic surface brightness cutoff to simulated ultra-faint galaxies shrinks their inferred sizes and masses, improves agreement with observed dwarfs, but biases dynamical mass estimates so that dark matter densities are overestimated.