Molecular cloud fluctuations

Details Molecular cloud fluctuations Molecular cloud fluctuations

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...190..259s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 190, no. 1-2, Jan. 1988, p. 259-268. Research sponsored by the Naturvetenskapl

Astronomy and Astrophysics

Astrophysics

4

Carbon Monoxide, Interstellar Matter, Molecular Clouds, Spectral Line Width, Density Distribution, Power Spectra, Statistical Analysis, Velocity Distribution

Scientific paper

The emission of the 13CO J = 1-0 line, from fragmentary (clumpy) clouds, is studied. Some basic cloud types are constructed and their line emission calculated. The models range from simple ones with uncorrelated density and velocity fluctuations to complex structures consisting of an hierarchy of rotating fragments. The author finds that the line velocity primarily samples the large scale velocity field whereas the line width samples the small scales. The effects of density fluctuations are strongly enhanced (as compared to a linear relation between intensity and density) in the intensity maps.

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