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| Paper: |
The Polarization of a Galactic Halo |
| Volume: |
165, The Third Stromlo Symposium: The Galactic Halo |
| Page: |
59 |
| Authors: |
Moody, Rachel A.; Kalnajs, Agris J. |
| Abstract: |
We show, by means of numerical simulations, how a galactic halo is deformed or polarized by a slowly assembled disk. The model we have chosen consists of a live spherical Plummer halo and a small and rigid Toomre-Kuzmin disk. The disk-to-halo mass ratio is 3/20 and the scale ratio is 1/8. This combination of rigid masses produces a flat rotation curve out to at least 10 solar radii. The presence of the disk increases the number of halo stars in the solar neighbourhood by a factor of three and their mean-square speed by a factor of two. While such enhancements make it easier to find halo stars in the solar neighbourhood, they also show that the presence of the disk makes it more difficult to infer the structure of the halo from this sample. |
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