Comments on the paper 'Hydrodynamic and turbulent motions in the galactic disk'

Details Comments on the paper 'Hydrodynamic and turbulent motions in the galactic disk' Comments on the paper 'Hydrodynamic and turbulent motions in the galactic disk'

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.100..417f&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 100, no. 1-2, March 1984, p. 417-419.

Astronomy and Astrophysics

Astrophysics

4

Hydrodynamics, Interstellar Matter, Milky Way Galaxy, Turbulent Flow, Angular Momentum, Galactic Rotation, Shear Flow

Scientific paper

Two comments are prompted by the recent paper of Quiroga (1983). First, it is pointed out that Quiroga's identification of two distinct types of motion (hydrodynamic and turbulent) within the galactic disk supports the suggestion that turbulent motions in the Galaxy are generated by the shearing action of differential galactic rotation. Secondly, as a result of these turbulent motions dominating the systematic hydrodynamics of galactic rotation at scale sizes below 100 - 300 pc, it appears that some process(es) associated with interstellar turbulence rather than with galactic rotation should play a dominant role in the establishment of the angular momentum of interstellar material.

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