Spitzer

For my Ph.D. work, I created 36 high resolution galaxy rotation curves using the Spitzer I-band for spiral galaxies in the Ursa Major (UMa) filament, and dissected the components into stellar, gaseous, and modelled both the dark matter components using both the NFW profile, and a core-modified dark matter profile, and compared these results to the alternative provided by Modified Gravity (MoG) and Modified Newtonian Dynamics (MOND).

 ApJ (2006 ) 636 721
 265 Citations
Galaxy Rotation Curves without Nonbaryonic Dark Matter
 PhDT (2009 ) None None
 25 Citations
Modified gravity and the phantom of dark matter
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The figures below show the Spitzer data, computed as Surface-Mass Densities (Σ(R); left panel), and corresponding galaxy rotation curves (v(R); right panel), derived for both high-surface brightness (HSB) and low-surface brightness (LSB) galaxies targetted in the Ursa Major (UMa) filament of galaxies.