Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...366..141v&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 366, Jan. 1, 1991, p. 141-162.
Astronomy and Astrophysics
Astrophysics
82
Carbon Monoxide, Interstellar Matter, Molecular Clouds, Abundance, Astronomical Models, Astronomical Spectroscopy, Emission Spectra, Line Spectra
Scientific paper
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.
Black John Harry
Gredel Roland
Phillips Thomas G.
van Dishoeck Ewine F.
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