Abstract
So long ago as 1934, we observed, in the night sky spectrum, radiations characteristic of the nuclei of the comets, at about λ λ 4300 and 4050 A. 1. Their origin was then unknown. The recent identification2 of cometary radiations near λ 4300 with a band of the CH molecule induced us to search systematically for the CH bands in the sky spectrum. For this purpose we used unpublished tables of wave-lengths measured by Gauzit in the ultra-violet and by Cabannes and Dufay in the blue and violet regions of the visible spectrum.
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References
Cabannes and Dufay, Comptes rendus, 198, 306 (1934); 68e Congrès des Sociétés Savantes, 66 (1935).
Nicolet, M., Z. Astrophys., 15, 154 (1938); Dufay, J., Comptes rendus, 206, 1550 (1938).
Swings, P., and Rosenfeld, L., Astrophys. J., 86, 486 (1937).
Cabannes et Dufay, Comptes rendus, 203, 903 (1936).
Grenat, H., Comptes rendus, 192, 1553 (1931).
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CABANNES, J., DUFAY, J. & GAUZIT, J. CH Bands in the Night Sky Spectrum. Nature 142, 718–719 (1938). https://doi.org/10.1038/142718b0
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DOI: https://doi.org/10.1038/142718b0
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