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The surprisingly flattened dark matter halo
of the Andromeda Galaxy
Banerjee & Jog 2008, Astrophysical Journal, 685, 284
Gas
Bulge
a
Dark Matter Halo
Stars
c
c/a = 0.4
The radial HI gas scaleheight data has been modelled to
trace the shape of the elusive dark matter halo .
The flattened shape obtained is unusual, and has important
implications for galaxy formation.
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