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An analytic distribution function for a massless cored stellar system in a cuspy dark matter halo
Maarten A. Breddels, Amina Helmi
We demonstrate the existence of distribution functions that can be used to represent spherical massless cored stellar systems embedded in cuspy dark matter halos with constant mild…
Internal kinematics and dynamical models of dwarf spheroidal galaxies around the Milky Way
Giuseppina Battaglia, Amina Helmi, Maarten Breddels
We review our current understanding of the internal dynamical properties of the dwarf spheroidal galaxies surrounding the Milky Way. These are the most dark matter dominated galaxi…
Orbit-based dynamical models of the Sculptor dSph galaxy
Maarten A. Breddels, A. Helmi, R. C. E. van den Bosch +2
We have developed spherically symmetric dynamical models of dwarf spheroidal galaxies using Schwarzschild's orbit superposition method. This type of modelling yields constraints bo…
Not too big, not too small: the dark halos of the dwarf spheroidals in the Milky Way
Carlos A. Vera-Ciro, Amina Helmi, Else Starkenburg +1
We present a new analysis of the Aquarius simulations done in combination with a semi-analytic galaxy formation model. Our goal is to establish whether the subhalos present in LCDM…
Schwarzschild models of the Sculptor dSph galaxy
Maarten A. Breddels, Amina Helmi, R. C. E. van den Bosch +2
We have developed a spherically symmetric dynamical model of a dwarf spheroidal galaxy using the Schwarzschild method. This type of modelling yields constraints both on the total m…