The insight into the dark side. I. The pitfalls of the dark halo parameters estimation

12 Aug 2016 Saburova Anna Kasparova Anastasia Katkov Ivan

We examined the reliability of estimates of pseudoisothermal, Burkert and NFW dark halo parameters for the methods based on the mass-modelling of the rotation curves.To do it we constructed the $\chi^2$ maps for the grid of the dark matter halo parameters for a sample of 14 disc galaxies with high quality rotation curves from THINGS. We considered two variants of models in which: a) the mass-to-light ratios of disc and bulge were taken as free parameters, b) the mass-to-light ratios were fixed in a narrow range according to the models of stellar populations... (read more)

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  • ASTROPHYSICS OF GALAXIES
  • COSMOLOGY AND NONGALACTIC ASTROPHYSICS