Dark Matter in Dwarf Galaxies: High Resolution Observations

Details Dark Matter in Dwarf Galaxies: High Resolution Observations Dark Matter in Dwarf Galaxies: High Resolution Observations

2003-11-11

arxiv.org/abs/astro-ph/0311259v1

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures. To appear in the proceedings of IAU Symposium 220 "Dark Matter in Galaxies", which took place in July 2003

Scientific paper

We present observations and analysis of rotation curves and dark matter halo density profiles in the central regions of four nearby dwarf galaxies. This observing program has been designed to overcome some of the limitations of other rotation curve studies that rely mostly on longslit spectra. We find that these objects exhibit the full range of central density profiles between constant density and NFW halos. This result suggests that there is a distribution of central density slopes rather than a unique halo density profile.

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