Die Häufigkeit der Doppelsterne in der S
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P. Brosche
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Article
📅
2006
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John Wiley and Sons
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English
⚖ 287 KB
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The observed relative frcquency of visual double stars in the solar neighbourhood decreases with increasing distance. This diminution is quantitatively explained as result of the most efficient selection effect, which is caused by the resolving power of the great refractors. The observed values are