Oppositions-Ephemeride für 11 Parthenope
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H. Osten
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Article
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1929
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John Wiley and Sons
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English
⚖ 110 KB
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If this be true it would seem difficult to avoid the conclusion that the variations of velocity so common in these stars are due largely to motions of expansion and contraction, rather than to orbital motion. A very natural explanation of the reversal of motion between the absorption condition and