Solar and meteoritic abundance of silicon |
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| Authors: | U. Becker P. Zimmermann H. Holweger |
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| Affiliation: | Institut für Strahlungs- und Kernphysik, Technische Universität Berlin, Rondellstrasse 5, D-1000 Berlin 37, West Germany;Institut für Theoretische Physik und Sternwarte, Universität Kiel, D-2300 Kiel, West Germany |
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| Abstract: | Recent lifetime measurements on excited electronic states of neutral silicon (Beckeret al., Phys. Lett. In press, 1980) lead to a reassessment of widely used experimental transition probabilities Garz, Astron. Astrophys., 26, 471–477, 1973 of Si I lines. This translates into a 25% downward revision of the Si abundance determined from the solar spectrum.A solar atomic ratio, Si/Ca = 15.5 is inferred. This value coincides with that found in carbonaceous chondrites, but contrasts with ordinary and enstatite chondrites. |
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