The stellar mass-halo mass relation of isolated field dwarfs : a critical test of ΛCDM at the edge of galaxy formation

  title={The stellar mass-halo mass relation of isolated field dwarfs : a critical test of $\Lambda$CDM at the edge of galaxy formation},
  author={Justin I Read and Giuliano Iorio and Oscar Agertz and Filippo Fraternali},
  journal={Monthly Notices of the Royal Astronomical Society},
We fit the rotation curves of isolated dwarf galaxies to directly measure the stellar mass-halo mass relation (M*-M200) over the mass range 5 × 105 ≲ M*/M⊙ ≲ 108. By accounting for cusp-core transformations due to stellar feedback, we find a monotonic relation with little scatter. Such monotonicity implies that abundance matching should yield a similar M*- M200 if the cosmological model is correct. Using the 'field galaxy' stellar mass function from the Sloan Digital Sky Survey (SDSS) and the… 

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