Open AccessModelling the CO emission in southern Bok globules
Author(s) -
CecchiPestellini Cesare,
Casu Silvia,
Scappini Flavio
Publication year - 2001
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2001.04746.x
Subject(s) - physics , radiative transfer , astrophysics , molecular cloud , excitation , atmospheric radiative transfer codes , kinetic energy , stars , optics , classical mechanics , quantum mechanics
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.