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词汇
變光星
释义
變光星
biàn guāng xīng
凡恆星中能變化光度的星稱為「變光星」。產生變光的原因有二:一、是恆星本體的光度起變化。二、是交蝕變星,即兩顆相近的恆星,因互相繞著質心扭轉運動,時而相掩,時而分開,分開時光度不變,相掩時光度變暗,此一交蝕作用,影響視覺,故產生變光的現象。簡稱為「變星」。
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更新时间:2026/8/5 21:33:41