Glossary term: 水平分支
Description: 中心核反應將氦合成為碳的恆星被稱為水平分支恆星。之所以叫這個名字，是因為這些恆星位於赫羅圖中的水平支上，表現為 "表面 "溫度（有效溫度）分布在一定範圍，但光度幾乎恆定。這些恆星的演化已經超過了紅巨星階段，質量（外層）損失量不等。質量不超過八倍太陽質量的主序星會經歷這一演化階段。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
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