Modelling the CO emission in southern Bok globules

Astronomy and Astrophysics – Astronomy

Scientific paper

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Stars: Formation, Ism: Globules, Ism: Molecules, Radio Lines: Ism

Scientific paper

The analysis of the sample of southern globules investigated by Scappini et al. in the CO (4-3) transition has been extended using a statistical equilibrium-radiative transfer model and making use of the results of Bourke et al. and Henning & Launardt for those globules which are in common among these samples. CO column densities and excitation temperatures have been calculated and the results compared with a chemical model representative of the chemistry of a spherical dark cloud. In a number of cases the gas kinetic temperatures have been constrained.

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