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The effects of the triaxiality of dark matter halos on stellar streams DM Halo of the Galaxy modelled with a generalized NFW potential (triaxial and with varying axial ratios) The proportion of chaotic areas is sensitive to the orientation of the initial velocity

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Page 1: The effects of the triaxiality of dark matter halos on ...€¦ · The effects of the triaxiality of dark matter halos on stellar streams Selectionofinitialconditions forstreamprogenitors

The effects of the triaxiality of dark matter halos

on stellar streams

DM Halo of the Galaxy modelled with a generalized NFWpotential (triaxial and with varying axial ratios)

The

proportion

of chaotic

areas is

sensitive to

the

orientation

of the

initial

velocity

Page 2: The effects of the triaxiality of dark matter halos on ...€¦ · The effects of the triaxiality of dark matter halos on stellar streams Selectionofinitialconditions forstreamprogenitors

The effects of the triaxiality of dark matter halos

on stellar streams

Selection of initial conditions

for stream progenitors

On each one of the ICs we have centred a

Plummer sphere of 104 stars (representing

a dwarf galaxy). Plummer spheres have

Mtotal = 2.25 × 107M⊙ and

r1/2 = 0.375 kpc.

Observational properties of the streams