…In 1844, FW Bessel discovered that the motion of Sirius was not straight, but wobbled, and he believed that it was accompanied by a faint star that was too dim to be seen. This companion star, 10 magnitudes (10,000 times) fainter than the main star of Sirius, was discovered by AG Clark (1832-97) in 1862. The wobble of the main star's orbit was analyzed, and it was found that the companion star had a mass similar to that of the Sun (1.02 times). … *Some of the terminology referenced in "Clark, AG" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…すなわち,1844年に,F.W.ベッセルは,シリウスの運動が直線でなく,ふらついていることを見いだし,暗くて見えない星を伴っていると考えた。シリウスの主星よりも10等級(1万倍)も暗いこの伴星は,1862年にクラークA.G.Clark(1832‐97)によって見つけられた。主星の軌道のふらつきが解析され,伴星の質量は太陽程度(1.02倍)であることがわかった。… ※「Clark,A.G.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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