Modelling the CO emission in southern Bok globules

Modelling the CO emission in southern Bok globules

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...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2001-10, Vol.326 (4), p.1255-1260
Hauptverfasser: Cecchi-Pestellini, Cesare, Casu, Silvia, Scappini, Flavio
Format: Artikel
Sprache:eng
Schlagworte:
ISM: globules
ISM: molecules
radio lines: ISM
stars: formation
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Zusammenfassung: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.
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2001.04746.x