The smallest sizes of diffuse interstellar clouds

Details The smallest sizes of diffuse interstellar clouds The smallest sizes of diffuse interstellar clouds

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2345..258d&link_type=abstract

In NASA. Goddard Space Flight Center Local Interstellar Medium, No. 81 p 258-262 (SEE N85-15539 06-90)

Computer Science

3

Absorption Spectra, Clouds, Interstellar Gas, Opacity, Size (Dimensions), Velocity Distribution, Kinematics, Variations

Scientific paper

By observing the difference in optical depths between absorption spectra toward the two components of double sources the authors have measured the variations in opacity over lengths of less than 0.1 up to 10 pc inside diffuse interstellar clouds. Significant variations are detected on scales larger than about 0.2 pc, but not less. This may represent the minimum size for diffuse cloud structure. By comparing the variations of Gaussian fitted line parameters the authors find that variations in the internal velocity field of diffuse clouds explain the data rather better than tiny independent "cloudlets".

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