Observed Properties of Dark Matter: dynamical studies of dSph galaxies

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dc.creatorGilmore, G
dc.creatorWilkinson, M
dc.creatorKleyna, J
dc.creatorKoch, A
dc.creatorEvans, N. Wyn
dc.creatorWyse, R. F. G.
dc.creatorGrebel, E. K.
dc.date2006-08-24
dc.date.accessioned2026-07-07T11:04:09Z
dc.date.available2026-07-07T11:04:09Z
dc.descriptionThe Milky Way satellite dwarf spheroidal (dSph) galaxies are the smallest dark matter dominated systems in the universe. We have underway dynamical studies of the dSph to quantify the shortest scale lengths on which Dark Matter is distributed, the range of Dark Matter central densities, and the density profile(s) of DM on small scales. Current results suggest some surprises: the central DM density profile is typically cored, not cusped, with scale sizes never less than a few hundred pc; the central densities are typically 10-20 GeV/cc; no galaxy is found with a dark mass halo less massive than ~5.10^7 M_sun. We are discovering many more dSphs, which we are analysing to test the generality of these results.
dc.descriptionPresented at UCLA Dark Matter 2006 conference, March 2006. In press in Nuclear Physics B
dc.identifierhttps://arxiv.org/abs/astro-ph/0608528
dc.identifierhttp://arxiv.org/abs/astro-ph/0608528
dc.identifierNucl.Phys.Proc.Suppl.173:15-18,2007
dc.identifierdoi:10.1016/j.nuclphysbps.2007.08.143
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188790
dc.subjectAstrophysics
dc.titleObserved Properties of Dark Matter: dynamical studies of dSph galaxies
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