CO J = 3 -> 2 observations of translucent and high-latitude molecular clouds

Dishoeck, E.F. van; Phillips, T.G.; Black, J.H.; Gredel, R. (1991)

Article / Letter to editor

Measurements were carried out on the CO J = 3-2 emission line at 345 GHz from a number of translucent and high-latitude molecular clouds, as well as on the J = 2-1 and J = 1-0 lines of both the (C-12)O and (C-13)O. It is shown that the physical conditions in the high-latitude clouds are very similar to those in the translucent clouds. The densities derived from measured (C-12)O 1-0/3-2 ratios were often found to be higher than those based on the C2 excitation, while densities derived from measured 3-2/(C-13)O 1-0 ratios were similar to those based on C2.

• carbon monoxide
• interstellar matter
• molecular clouds
• abundance
• astronomical models
• astronomical spectroscopy
• emission spectra
• line spectra

• All authors: Dishoeck, E.F. van; Phillips, T.G.; Black, J.H.; Gredel, R.
• Date: 1991
• Publisher: The American Astronomical Society