On OMC-1 temperatures determined from methyl cyanide observations

Details On OMC-1 temperatures determined from methyl cyanide observations On OMC-1 temperatures determined from methyl cyanide observations

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...260..159h&link_type=abstract

Astrophysical Journal, Part 1, vol. 260, Sept. 1, 1982, p. 159-162.

Other

19

Cyanides, Interstellar Gas, Kinetic Energy, Methyl Compounds, Molecular Clouds, Molecular Energy Levels, Boltzmann Distribution, Electron Transitions, Equilibrium Equations, Nebulae, Radiative Transfer

Scientific paper

An analysis is performed on the J(k) = 12(k)-11(k) and 13(k)-12(k) transitions of methyl cyanide detected by other investigators in the direction of OMC-1. The original interpretation of those observations argues for the presence of two distinct temperature regions or possibly a temperature gradient within the cloud. The analysis presented here demonstrates that the observations of these particular molecular transitions are consistent with a single methyl cyanide emission region with a source kinetic temperature of 121.2 + or - 8.2 K and a molecular rotational temperature of 16.6 + or - 1.8 K.

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