Description: A型星是指光譜類型為“A“的恆星。天文學家通過A型星光譜中存在的非常強的氫吸收線來識別它們。它們的典型（有效）溫度在7400 K到10,000 K之間。與其他恆星相比，除非受到星際或大氣層紅化的影響，否則它們在人眼中呈現白色或藍白色。天狼星是夜空中最亮的恆星，而織女星是所有其他恆星在視星等尺度上衡量其他星亮度的標準星，它們都是A型星。

Related Terms:

• Apparent Magnitude
• Sirius
• Spectral Type
• 恆星
• Reddening
• Effective Temperature
• 吸收線

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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