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Problems and Alternatives to Lambda Cold Dark Matter - Berkeley ...

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Galaxies appear simpler than<br />

expected<br />

M. J. Dysney, et. al. Vol 455(2008)1082<br />

R90 ∝ R50<br />

Lg ∝ R 3 50<br />

MHI ∝ R 2 50<br />

Md ∝ Lg<br />

Σ = Lg/R 2 50 ∝ L 1/3<br />

g<br />

Whereas<br />

Lg/R 3 50<br />

Md/R 3 50<br />

∝ R50<br />

are independent of the size<br />

of the galaxy

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