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| Paper: |
Formation and Evolution of Galaxy Disks: What is wrong with CDM? |
| Volume: |
275, Disks of Galaxies: Kinematics, Dynamics and Perturbations |
| Page: |
405 |
| Authors: |
Avila-Reese, V.; Firmani, C. |
| Abstract: |
We find that the density distribution of galaxy disks formed within ΛCDM halos is in agreement with observations. The luminous-to-dark matter ratio increases with the surface brightness (SB). The lowest SB models tend to be minimum disks, but the high SB models hardly attain the maximum disk solution. With the introduction of shallow cores in the halos, high SB models become maximum disks. The shallow cores also help to improve the inner density profiles of bulge-less low SB models and the zero-point of the Tully-Fisher relation. The models predict well this relation and its scatter, as well as the small correlation among the residuals of this and the luminosity-radius relation, in spite of the rotation curve shapes depend on SB. |
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