翻訳と辞書 Words near each other ・ Zeta Aquilae ・ Zeta Arae ・ Zeta argillaceum ・ Zeta Arietis ・ Zeta Aurigae ・ Zeta Banovina ・ Zeta Beta Tau ・ Zeta Bosio ・ Zeta Boötis ・ Zeta Caeli ・ Zeta Cancri ・ Zeta Canis Majoris ・ Zeta Canis Minoris ・ Zeta Capricorni ・ Zeta Cassiopeiae ・ Zeta Centauri ・ Zeta Cephei ・ Zeta Ceti ・ Zeta Chamaeleontis ・ Zeta Chi ・ Zeta Chi Phi ・ Zeta Circini ・ Zeta Coronae Australis ・ Zeta Coronae Borealis ・ Zeta Corse ・ Zeta Corvi ・ Zeta Crateris ・ Zeta Crucis ・ Zeta Cygni ・ Zeta Delphini Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Zeta Centauri ： ウィキペディア英語版 Zeta Centauri Zeta Centauri (ζ Centauri, ζ Cen) is a binary star system in the southern constellation of Centaurus. It has the proper name Alnair, from the scientific-Arabic〔 ''Nayyir Badan Qanṭūris'' (ألناير ألبطن ألقنتورس), meaning "The Bright (Star) of the Body of the Centaur".〔''ibid''., p.28.〕 With a combined apparent visual magnitude of +2.55,〔 it is one of the brighter members of the constellation. This system is close enough to the Earth that its distance can be measured directly using the parallax technique. This yields a value of roughly , with a 1.6% margin of error.〔 In Chinese, (), meaning ''Arsenal'', refers to an asterism consisting of ζ Centauri, η Centauri, θ Centauri, 2 Centauri, HD 117440, ξ1 Centauri, γ Centauri, τ Centauri, D Centauri and σ Centauri.〔 ''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 Centauri itself is known as (, (英語:the First Star of Arsenal).)〔 (AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 25 日 )〕 ζ Cen is a double-lined spectroscopic binary system,〔 which indicates that the orbital motion was detected by shifts in the absorption lines of their combined spectra caused by the Doppler effect. The two stars orbit each other over a period of slightly more than eight days with an orbital eccentricity of about 0.5.〔 The estimated angular separation of the pair is 1.4 mas.〔 At an estimated age of 40 million years,〔 the primary component of this system appears to be in the subgiant stage of its evolution with a stellar classification of B2.5 IV.〔 It is a large star with nearly 8〔 times the mass of the Sun and close to 6〔 times the Sun's radius. This star is rotating rapidly with a projected rotational velocity of .〔 ==References== 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 Centauri」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.