On the minimum intensity of the Na D2-5890 Å line in sunspot umbra |
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| Authors: | T Fay J Remo K Czaja |
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| Institution: | (1) Bartol Research Foundation of the Franklin Institute, 19081 Swarthmore, Pa., U.S.A.;(2) Present address: Indiana University, 47401 Bloomington, Ind., U.S.A. |
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| Abstract: | The line-to-continuum intensity ratio for the center of the Na D2 absorption line in a spot of area 20 × 10–6 in the Rome Group 5847 was found to be 0.033±0.05 on 6–7/7/70 by two methods.Goethe Link Publication No. 139. This work was supported by the National Science Foundation and the National Aeronautics and Space Administration. |
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