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A UNIVERSAL MASS PROFILE FOR DWARF SPHEROIDAL GALAXIES?

We apply the Jeans equation to estimate masses for eight of the brightest dwarf spheroidal (dSph) galaxies. For Fornax, the dSph with the largest kinematic data set, we obtain a model-independent…
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A METHOD FOR MEASURING (SLOPES OF) THE MASS PROFILES OF DWARF SPHEROIDAL GALAXIES

We introduce a method for measuring the slopes of mass profiles within dwarf spheroidal (dSph) galaxies directly from stellar spectroscopic data and without adopting a dark matter halo model. Our…
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The remnants of galaxy formation from a panoramic survey of the region around M31

A panorama of galaxy structure of the Andromeda galaxy (M31) is reported, which directly confirms the basic tenets of the hierarchical galaxy formation model and reveals the shared history of M31 and M33 in the unceasing build-up of galaxies.
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THE RADIAL VELOCITY EXPERIMENT (RAVE): FIFTH DATA RELEASE

The first data release of the Radial Velocity Experiment (RAVE) is presented and it is demonstrated that the radial velocities derived for the first data set do not show any systematic trend with color or signal-to-noise ratio.
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The Tidal Evolution of Local Group Dwarf Spheroidals

We use N-body simulations to study the evolution of dwarf spheroidal galaxies (dSphs) driven by galactic tides. We adopt a cosmologically motivated model where dSphs are approximated by a King model…
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A timing constraint on the (total) mass of the Large Magellanic Cloud

The research leading to these results has received ERC funding under the programme (FP/2007-2013)/ERC Grant Agreement no. 308024.
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THE COUPLING BETWEEN THE CORE/CUSP AND MISSING SATELLITE PROBLEMS

We calculate the energy that baryons must inject into cold dark matter (CDM) halos in order to remove centrally divergent DM cusps on scales relevant to observations of dwarf spheroidal galaxies…
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A Comprehensive Model for the Monoceros Tidal Stream

We have compiled an extensive data set on potential parts of the Monoceros tidal stream and performed an exhaustive survey of dwarf galaxy semianalytic orbits in order to constrain its orbital…
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The impact of dark matter cusps and cores on the satellite galaxy population around spiral galaxies

We use N-body simulations to study the eects that a divergent (i.e. \cuspy") dark and disc masses. We nd that tidal encounters with discs tend to decrease the average mass of satellite galaxies at…
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The cold veil of the Milky Way stellar halo.

We build a sample of distant (D > 80 kpc) stellar halo stars with measured radial velocities. Faint (20 < g < 22) candidate blue horizontal branch (BHB) stars were selected using the deep, but wide,…
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