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| Paper: |
Polygonal Arms and Hexagonal Rings in Disk Galaxies |
| Volume: |
230, Galaxy Disks and Disk Galaxies |
| Page: |
147 |
| Authors: |
Chernin, A. D.; Zasov, A. V.; Arkhipova, V. P.; Kravtsova, A. S. |
| Abstract: |
We pay attention at the existence of straight segments of spiral arms, first described by Vorontsov-Vel'yaminov as `rows'. Now they are found in more than a hundred of galaxies. Their properties are shortly discussed here. It is argued that some wave processes, possibly related to chock waves, should play a crucial role in their formation. Another type of structural features, which may have a similar nature, are hexagonally-shaped inner rings, encircling the nuclei of some spiral galaxies. |
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