Kinematics of the outer pseudorings and the spiral structure of the Galaxy

  title={Kinematics of the outer pseudorings and the spiral structure of the Galaxy},
  author={A. M. Mel’nik and Pertti Rautiainen},
  journal={Astronomy Letters},
The kinematics of the outer rings and pseudorings is determined by two processes: the resonance tuning and the gas outflow. The resonance kinematics is clearly observed in the pure rings while the kinematics of the outflow is manifested itself in the pseudorings. The direction of systematical motions in the pure rings depends on the position angle of a point with respect to the bar major axis and on the class of the outer ring. The direction of the radial and azimuthal components of the… 

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Galactic resonance rings: modelling of motions in the wide solar neighbourhood

  • A. Melnik
  • Physics
    Monthly Notices of the Royal Astronomical Society
  • 2019
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