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Measurement of the Doppler Width of the λ 5577 Line in the Night Sky

Abstract

A DETERMINATION of the Doppler width of the λ 5577 oxygen line in the night sky spectrum was attempted by Babcock1; but his instrumentation permitted only an estimate of the upper limit of this width and hence of the temperature of the emitting layer. We wish to report here preliminary results of a new study of the λ 5577 line using improved interferometric apparatus.

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References

  1. Babcock, H. D., Astrophys. J., 57, 209 (1923).

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  2. Chabbal, R., J. Recherches du Centre Nat. Recherches Sci., No. 24, 138 (1953).

  3. van de Hulst, H. C., and Reesinck, J. J. M., Astrophys. J., 106, 121 (1947).

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  4. Roach, F. E., and Pettit, H. B., J. Geophys. Research, 56, 325 (1951).

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WARK, D., STONE, J. Measurement of the Doppler Width of the λ 5577 Line in the Night Sky. Nature 175, 254–255 (1955). https://doi.org/10.1038/175254b0

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