Abstract
We report an unsuccessful search for the He+ λ 4686 line in the low chromosphere. However, at the location of this line we detect a number of other chromospheric emission lines. This leads us to the conclusion that the He+ λ 4686 identification made in the past, as well as other identifications, are probably in error. Additionally the region of the neutral helium λ4713 line is also studied.
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References
Athay, R. B. and Menzel, D. H.: 1965, Astrophys. J. 123, 285.
Athay, R. B., Menzel, D. H., and Orrall, F. Q.: 1957, Smiths. Contrib. Astrophys. 2, 35.
Dunn, R. B., Evans, J. W., Jefferies, J. T., Orrall, F. Q., White, O. R., and Zirker, J. B.: 1968, Astro-phys. J. Suppl. Series 15, 275.
Herzberg, G.: 1956, Physik 146, 269.
Hirayama, T.: 1972, Solar Phys. 24, 310.
Houtgast, J.: 1957, Rech. Astron. Obs. Utrecht XIII, 3.
Pierce, A. K.: 1968, Astrophys. J., Suppl. Series 17, 1.
Series, G. W.: 1954, Proc. Roy. Soc. London, Ser. A 266, 377.
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On leave from Tokyo Astronomical Observatory, Mitaka, Japan.
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Worden, S.P., Beckers, J.M. & Hirayama, T. The He+ λ 4686 line in the low chromosphere. Sol Phys 28, 27–34 (1973). https://doi.org/10.1007/BF00152908
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DOI: https://doi.org/10.1007/BF00152908