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The solar H and K lines of ionized calcium

Solar Physics volume 3, pages 164–180 (1968)Cite this article

Abstract

Photographic observations of the mean H and K profiles are given for several positions across the solar disk (0.1 < μ < 0.6). The core profiles of H and K are nearly identical at the same position on the sun.

Estimates of the mean Doppler width and the depth of formation of the K2 emission peaks are given. A more elaborate analysis confirms that the K2 peaks are formed in a relatively shallow layer (τ 0 ∼ 3) in which the Doppler width decreases rapidly inward. The relevance of these conclusions to current attempts to predict theoretically the H and K profiles is discussed.

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Authors and Affiliations

  1. University of Hawaii, U.S.A.

    J. B. Zirker

Authors
  1. J. B. Zirker
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Zirker, J.B. The solar H and K lines of ionized calcium. Sol Phys 3, 164–180 (1968). https://doi.org/10.1007/BF00154252

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  • DOI: https://doi.org/10.1007/BF00154252

Keywords

  • Calcium
  • Emission Peak
  • Solar Disk
  • Shallow Layer
  • Doppler Width