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One- and multi-component models of the upper photosphere based on molecular spectra

II: CN(1, 1) of the CN violet system

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Abstract

We have obtained center-to-limb photoelectric spectra of the CN(1,1) B-X bandhead region λ3868–3872 Å at Kitt Peak National Observatory. From these spectra and a detailed analysis of the formation of the CN (1, 1) spectrum we derive a best-fit upper photospheric model differing from the HSRA which is consistent with our previous CN(0, 0) λ3883 spectra. We derive a solar carbon abundance of log A c = 8.30 ± 0.10 compared to the HSRA value of log A c = 8.55 ± 0.10. In addition we specify the regions of formation for the CN(0, 0) λ3883.35 and CN(1, 1) λ 3871.38 bandheads at disc center and limb.

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Authors and Affiliations

  1. Joint Institute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, 80302, Boulder, Colo., U.S.A.

    George H. Mount & Jeffrey L. Linsky

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  1. George H. Mount
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  2. Jeffrey L. Linsky
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Visiting Astronomer at Kitt Peak National Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation.

Staff member, Laboratory Astrophysics Division, National Bureau of Standards.

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Mount, G.H., Linsky, J.L. One- and multi-component models of the upper photosphere based on molecular spectra. Sol Phys 35, 259–276 (1974). https://doi.org/10.1007/BF00151947

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  • DOI: https://doi.org/10.1007/BF00151947

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