Observational Constraints on the Dark Matter Distribution in Low Mass Dwarf Galaxies

Details Observational Constraints on the Dark Matter Distribution in Low Mass Dwarf Galaxies Observational Constraints on the Dark Matter Distribution in Low Mass Dwarf Galaxies

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21534703k&link_type=abstract

American Astronomical Society, AAS Meeting #215, #347.03; Bulletin of the American Astronomical Society, Vol. 42, p.528

Astronomy and Astrophysics

Astronomy

Scientific paper

We present high resolution H-alpha SparsePak IFU velocity fields and long-slit H-alpha rotation curves for a sample of low mass dwarf galaxies. These galaxies exhibit large mass discrepancies down to small radii, making them excellent laboratories for measuring the mass distribution of dark matter halos. We use these data to test for the presence of cuspy halos predicted by LCDM. We also use the velocity field data to test recent models suggesting strongly noncircular motions in triaxial halos. This research was supported by NSF grant AST 0702496.

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