Turbulent motions in molecular clouds

Details Turbulent motions in molecular clouds Turbulent motions in molecular clouds

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.111..343p&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 111, no. 2, April 1985, p. 343-354. Research supported by the Financiadora

Astronomy and Astrophysics

Astronomy

11

Hydrogen Clouds, Kolmogoroff Theory, Line Spectra, Molecular Clouds, Turbulence, Carbon Monoxide, Formaldehyde, Gas Density, Gravitational Collapse, Hydroxyl Emission, Magnetohydrodynamic Stability, Neutral Gases, Radio Sources (Astronomy), Size (Dimensions), Spectral Line Width

Scientific paper

The authors have studied the behavior of the inner motions of OH, H2CO, and CO molecular clouds. This study shows the existence of two main components of these clouds: the narrow one, associated to dense small clouds and a wide one 'representing' the large diffuse clouds seen in neutral hydrogen, the large clouds are the 'vortex' and intermediate state between turbulent and hydrodynamic motions in the Galaxy. For the dense clouds with sizes d < 10 pc the authors have found a relationship σ ∝ d0.38 consistent with the Kolmogorov law of turbulence; the densities and sizes of these clouds behave as n ∝ d-1. Also, the effects of the inner magnetic field in these clouds are discussed.

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