Dark Matter in Dwarf Spheroidal Galaxies

Details Dark Matter in Dwarf Spheroidal Galaxies Dark Matter in Dwarf Spheroidal Galaxies

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003rmxac..17...38l&link_type=abstract

Galaxy Evolution: Theory & Observations (Eds. Vladimir Avila-Reese, Claudio Firmani, Carlos S. Frenk & Christine Allen) Revista

Astronomy and Astrophysics

Astronomy

1

Galaxies: Dwarf, Galaxies: Fundamental Parameters, Galaxies: Kinematics And Dynamics, Dark Matter

Scientific paper

I study the distribution of dark matter in dwarf spheroidal (dSph) galaxies by modelling their line-of-sight velocity dispersion profiles. Different dark matter profiles are considered, both cuspy and with flat density cores. The predictions are made in the framework of standard dynamical theory of two-component spherical systems with different anisotropy parameters. Comparison with observations for the Fornax dwarf shows that all dark matter profiles yield good fits but only profiles with cores are consistent with isotropic orbits.

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