Forbidden lines of Ca II in the photosph
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D. L. Lambert; E. A. Mallia; B. Warner
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Article
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1969
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Springer
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English
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On scans obtained with the Oxford photoelectric spectrometer, the [CalI] transition 4s 2S1/2-3d 2Da/~ is identified with a weak Fraunhofer line. It is argued that the strength of the line is consistent with the abundance of calcium which is derived from the permitted lines of CaI and Can.