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Zeta Arietis : ウィキペディア英語版 | Zeta Arietis
Zeta Arietis (ζ Ari, ζ Arietis) is the Bayer designation for a star in the northern constellation of Aries. It is dimly visible to the naked eye with an apparent visual magnitude of +4.89.〔 Based upon an annual parallax shift of 12.44 mas,〔 the distance to this star is . This is an A-type main sequence star with a stellar classification of A1 V.〔 It has a high rate of rotation with a projected rotational velocity of 133 km/s.〔 The star is shining at an effective temperature of 9,500 K,〔 giving it the characteristic white-hued glow of an A-type star.〔 ==Name==
This star, along with δ Ari, ε Ari, π Ari, and ρ3 Ari, were Al Bīrūnī's Al Buṭain (ألبطين), the dual of ''Al Baṭn'', the Belly.〔 According to the catalogue of stars in the ''Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars'', ''Al Buṭain'' were the title for five stars : δ Ari as ''Botein'', π Ari as ''Al Buṭain I'', ρ3 Ari as ''Al Buṭain II'', ε Ari as ''Al Buṭain III'' dan ζ Ari as ''Al Buṭain IV''.〔 In Chinese, (), meaning ''Yin Force'', refers to an asterism consisting of ζ Arietis, 63 Arietis, δ Arietis, τ Arietis and 65 Arietis.〔 ''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, ζ Arietis itself is known as (, (英語:the Second Star of Yin Force).)〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 22 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「Zeta Arietis」の詳細全文を読む
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