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CO $J$ = 3-2 observations of molecular line sources having high-velocity wings

Richardson, K. J.; White, Glenn J.; Avery, L. W.; Lesurf, J. C. G. and Harten, R. H. (1985). CO $J$ = 3-2 observations of molecular line sources having high-velocity wings. The Astrophysical Journal, 290 pp. 637–652.

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Twelve molecular line sources which exhibit high-velocity wings in the CO $J$ = 1-0 rotational transition have been observed in the CO $J$ = 3-2 line. The densities derived using observations of the transition in combination with the lower lines can be considerably higher than those derived purely from mapping the CO $J$ = 1-0 transition, in some cases by over an order of magnitude. This general conclusion tends to increase the likelihood that the outflows are capable of supporting clouds against free-fall gravitational collapse. Low values of apparent CO fractional abundance per unit velocity gradient are derived, which may be due to a depletion of CO in the outflow regions or alternatively, to clumping of the outflowing molecular gas.

Item Type: Journal Article
Copyright Holders: 1985 The American Astronomical Society
ISSN: 1538-4357
Keywords: carbon monoxide; interstellar gas; molecular clouds; radio sources (astronomy); electron transitions; gravitational collapse; line spectra; radio spectra
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
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Item ID: 31837
Depositing User: G. J. White
Date Deposited: 10 Feb 2012 08:59
Last Modified: 18 Jan 2016 12:04
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