Avery, L. W.; White, Glenn J.; Williams, I. P. and Cronin, N.
|DOI (Digital Object Identifier) Link:||http://doi.org/10.1086/164931|
|Google Scholar:||Look up in Google Scholar|
In a search for embedded molecular outflows, nine globules and compact dark clouds, including the known outflow sources B335 and L723, were observed in the 12CO J = 2-1 and J = 3-2 lines, and a Monte Carlo radiative transfer code utilizing a combination of microturbulent and velocity gradient line broadening was used to model the flows. Both the known sources are found to be of relatively low density and modest energy. It is found that nH2 = 3x103 cm-3 in B335 and 1x3x103 cm-3 in the L723 high-velocity gas. None of the other seven clouds show clear evidence of bipolar outflows. Models of the globules B68 and B361 suggest efficient carbon isotope fractionation, with the 12CO and 13CO abundance ratios being 14 and 25, respectively.
|Item Type:||Journal Article|
|Copyright Holders:||1987 The American Astronomical Society|
|Keywords:||astronomical spectroscopy; carbon monoxide; dark matter; globules; line spectra; molecular clouds; line shape; molecular flow; nebulae; radiative transfer; velocity distribution|
|Academic Unit/Department:||Science > Physical Sciences
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||G. J. White|
|Date Deposited:||10 Feb 2012 10:34|
|Last Modified:||18 Jan 2016 12:04|
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