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Lambda Aurigae (λ Aur, λ Aurigae) is the Bayer designation for a solar analog〔 star in the northern constellation of Auriga.〔 It has the traditional name Al Hurr〔 and is visible to the naked eye with an apparent visual magnitude of 4.71.〔 Based upon parallax measurements made during the Hipparcos mission, it is approximately distant from the Earth.〔 This is a G-type main sequence star with a stellar classification of G1 V.〔 In terms of composition it is similar to the Sun, while the mass and radius are slightly larger.〔 It is 73% more luminous than the Sun〔 and radiates this energy from its outer atmosphere at an effective temperature of .〔 At this heat, the star glows with the yellow hue of a G-type star.〔 It has a low level of surface activity and is a candidate Maunder minimum analog.〔 Lambda Aurigae has been examined for the presence of excess infrared emission that may indicate the presence of a circumstellar disk of dust, but no significant surplus has been observed.〔 It is a possible member of the Epsilon Indi Moving Group of stars that share a common motion through space. The space velocity components of this star are = .〔 ==Name== This star is sometimes called by the name Al Hurr, meaning ''the fawn'' in Arabic.〔 Lambda Aurigae, along with μ Aur and ρ Aur, were Kazwini's Al Ḣibāʽ (ألحباع), the Tent.〔 According to the catalogue of stars in the ''Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars'', ''Al Ḣibāʽ'' were the title for three stars : λ Aur as ''Al Ḣibāʽ I'', μ Aur as ''Al Ḣibāʽ II'' and ρ Aur as ''Al Ḣibāʽ III''.〔 In Chinese, (), meaning ''Pool of Harmony'', refers to an asterism consisting of λ Aurigae, ρ Aurigae and HD 36041.〔 ''中國星座神話'', written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.〕 Consequently, λ Aurigae itself is known as (, (英語:the Third Star of Pool of Harmony).)〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 13 日 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lambda Aurigae」の詳細全文を読む スポンサード リンク
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