Cummins et al. 1983
Cummins, S.E., S. Green, P. Thaddeus, and R.A. Linke, 1983: The kinetic temperature and density of the Sagittarius B2 molecular cloud from observations of methyl cyanide. Astrophys. J., 266, 331-338, doi:10.1086/160782.
From observations with the Bell Laboratories 7 m telescope of the K components of the CH3CN J = 4→3 rotational transition at 73.6 GHz, 6→5 transition at 110.4 GHz, and 7→6 transition at 128.7 GHz, a mean kinetic temperature of 85±10 K and a mean H2 density of (1.1±0.5)×105 /cm3 are deduced for the central 2' of the Sgr B2 molecular cloud. Within the K = 0-4 ladders of CH3CN in Sgr B2 the populations of the radiatively coupled J levels are relaxed, with a rotational temperature of approximately 16 K — similar to that of several linear molecules.
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Cummins, S.E., Green, S., Thaddeus, P., and Linke, R.A.: The kinetic temperature and density of the Sagittarius B2 molecular cloud from observations of methyl cyanide, Astrophys. J., 266, 331-338, doi:10.1086/160782, 1983.
Cummins, S.E., S. Green, P. Thaddeus, and R.A. Linke (1983), The kinetic temperature and density of the Sagittarius B2 molecular cloud from observations of methyl cyanide, Astrophys. J., 266, 331-338, doi:10.1086/160782.
Cummins, S.E., S. Green, P. Thaddeus, and R.A. Linke, 1983: The kinetic temperature and density of the Sagittarius B2 molecular cloud from observations of methyl cyanide. Astrophys. J., 266, 331-338, doi:10.1086/160782.
Cummins, S.E., Green, S., Thaddeus, P., & Linke, R.A. 1983, Astrophys. J., 266, 331, doi:10.1086/160782.
Cummins SE, Green S, Thaddeus P, Linke RA. The kinetic temperature and density of the Sagittarius B2 molecular cloud from observations of methyl cyanide, Astrophys J 1983;266:331-338. doi:10.1086/160782.
S.E. Cummins, S. Green, P. Thaddeus, R.A. Linke, Astrophys. J. 266, 331-338, doi:10.1086/160782 (1983).
