High-resolution Measurements of the Halos of Four Dark Matter-dominated Galaxies : Deviations from a Universal Density Profile 1

@inproceedings{Simon2004HighresolutionMO,
  title={High-resolution Measurements of the Halos of Four Dark Matter-dominated Galaxies : Deviations from a Universal Density Profile 1},
  author={Joshua D. Simon and Alberto D. Bolatto and Adam K. Leroy},
  year={2004}
}
We derive rotation curves for four nearby, low-mass spiral galaxies and use them to constrain the shapes of their dark matter density profiles. This analysis is based on high-resolution two-dimensional Hα velocity fields of NGC 4605, NGC 5949, NGC 5963, and NGC 6689 and CO velocity fields of NGC 4605 and NGC 5963. In combination with our previous study of NGC 2976, the full sample of five galaxies contains density profiles that span the range from αDM = 0 to αDM = 1.20, where αDM is the power… CONTINUE READING