Differential Rotation and Turbulence in Extended HI Disks
When present, extended disks of neutral hydrogen around spiral galaxies show a remarkably uniform velocity dispersion of approx 6 km/s. Since stellar winds and supernovae are largely absent in such regions, neither the magnitude nor the constancy of this number can be accounted for in the classical...
| Main Authors: | , |
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| Format: | Journal article |
| Published: |
1998
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