Description: 光谱类型为"G"的恒星。天文学家通过识别电离钙的强吸收线来确定G型恒星；更广泛地说，G型恒星中的金属吸收线比更热的恒星（如F型恒星）更强，而比更冷的恒星（如K型恒星）更弱。G型恒星的典型（有效）温度在5200开尔文（K）到6000 K之间。与其他恒星相比，它们对人类肉眼呈现出黄色，除非存在显著的星际或大气层红化现象。处于主序阶段的G型恒星，即通过核聚变在核心区域将氢转化为氦的恒星，被称为黄矮星。太阳就是一个典型的G型黄矮星例子。

Related Terms:

• 光谱类型
• 恒星
• Sun
• 红化
• 有效温度
• 吸收线

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

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