Abstract
RYDBECK, Ellder and Irvine1 have recently detected the 9-cm lines of the 2П1/2, J = 1/2Λ doublet of interstellar CH. The F = 1 → 1 transition at 3,335.475 MHz was observed in emission in a wide range of galactic sources ranging from dark clouds to the spiral arms in front of Cassiopea A. The two satellite transitions F = 0 → 1 (at 3,263.788 MHz) and F 1 → 0 (at 3,349.185 MHz) were also observed in emission in several sources.
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References
Rydbeck, O. E. H., Ellder, J., and Irvine, W. M., Nature, 246, 466 (1973).
Manchester, R. N., Robinson, B. J., and Goss, W. M., Aust. J. Phys., 23, 75l (1970).
Gardner, F. F., and Ribes, J. C., Astrophys. Lett., 9, 175 (1971).
Shaver, P. A., and Goss, W. M., Aust. J. Phys. Astrophys. Suppl., No. 14, 133 (1970).
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ROBINSON, B., GARDNER, F., SINCLAIR, M. et al. Absorption and emission by interstellar CH at 9 cm. Nature 248, 31–32 (1974). https://doi.org/10.1038/248031a0
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DOI: https://doi.org/10.1038/248031a0
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