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| Paper: |
Tidal vs. Modal Dynamics in Disk Galaxies: the Tell-Tale Ultraviolet-Optical Signs |
| Volume: |
230, Galaxy Disks and Disk Galaxies |
| Page: |
211 |
| Authors: |
Waller, W. H.; Marcum, P. M.; Fanelli, M. N. |
| Abstract: |
Spiral structure in galaxy disks is often attributed to one or more density-wave modes that are driven by various massive asymmetries in the disks (e.g., bars) or in the disk environment (e.g., satellite galaxies). However, tidal effects induced by gravitating interlopers can also yield spiral structures. To distinguish between tidal and modal dynamics, one may determine whether the observed features are material constructs or propagating wavefronts, using ultraviolet-optical imaging. |
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