The structure and physical characteristics of BOK globules

Details The structure and physical characteristics of BOK globules The structure and physical characteristics of BOK globules

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987kfnt....3...45a&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 3, July-Aug. 1987, p. 45-51. In Russian.

Astronomy and Astrophysics

Astrophysics

Astrophysics, Globules, Interstellar Gas, Molecular Clouds, Astronomical Maps, Carbon Monoxide, Density Distribution, Gas Density, Hydrogen Clouds, Isothermal Processes

Scientific paper

The internal structure of globules sustained in equilibrium by turbulent pressure is investigated and isothermal models are calculated for the following clouds: B163, B335, L1407, and L1551. It is found that the density varies inversely as 1/r-squared in the globule envelopes while in the central regions, it is nearly constant; a density value of about 100,000/cu cm was obtained for the core. A formula for calculating the cloud mass from the surface density is obtained. (C-12)O/H2 ratios (about 10 to the -16) are determined via comparison of the calculated H2 column densities with observed (C-13)O column densities. The distances to the globules are refined by fitting the model parameters to the observations.

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