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The dependence of facula-photosphere contrast in molecular lines on dissociation energy

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Abstract

Assuming local thermodynamic equilibrium and the same relative abundances to prevail both in photosphere and faculae, the concentration-optical depth curves for molecules CH, NH, OH, C2, CN and CO have been obtained for the four combinations of two photospheric and two facular models and the relative excesses α of these molecules in the photosphere over those in faculae have been calculated. The change of photospheric model significantly affects the relationship, for a given facular model, between α and D 0, the dissociation energy of the molecule concerned. Besides, the average depth of formation in the facular models and photospheric models shows a relationship with D 0.

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Authors and Affiliations

  1. Uttar Pradesh State Observatory, Naini Tal, India

    M. C. Pande, V. P. Gaur & B. M. Tripathi

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  1. M. C. Pande
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  2. V. P. Gaur
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  3. B. M. Tripathi
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Pande, M.C., Gaur, V.P. & Tripathi, B.M. The dependence of facula-photosphere contrast in molecular lines on dissociation energy. Sol Phys 7, 370–376 (1969). https://doi.org/10.1007/BF00146142

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