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Chinese - Mandarin Audio Request

khatzumoto
289 Characters / 1 Recordings / 0 Comments

主序星在可顯示恆星演化過程的赫羅圖上,是分佈在由左上角至右下角,被稱為主序帶上的恆星。

赫羅圖可顯示恆星的演化過程,大約90%的恆星位於赫羅圖左上角至右下角的帶狀上,這邊線稱為主序帶。位於主序帶上的恆星為主序星。形成恆星的分子雲是位於圖中極右的區域,但隨著分子雲開始收縮,其溫度開始上升,慢慢移至主序。恆星臨終時會離開主序,除質量極低的恆星會往左下方移動,大質量恆星會往右上方移動,這裡是紅巨星及紅超巨星的區域,都是表面溫度低而光度高的恆星。未經過超新星爆炸的恆星會移向左下方,這裡是表面溫度低而光度高的區域,是白矮星的所在區域,接著會因為能量的損失,漸漸變暗成為黑矮星。

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