翻訳と辞書 Words near each other ・ Sigma Alpha Epsilon Chapter House of Miami University ・ Sigma Alpha Epsilon Fraternity House ・ Sigma Alpha Epsilon Fraternity House (Champaign, Illinois) ・ Sigma Alpha Epsilon Pi ・ Sigma Alpha Iota ・ Sigma Alpha Lambda ・ Sigma Alpha Mu ・ Sigma Alpha Omega ・ Sigma Alpha Rho ・ Sigma Andromedae ・ Sigma APO 120-400mm f/4.5-5.6 DG OS HSM lens ・ Sigma APO 150-500mm f/5-6.3 DG OS HSM lens ・ Sigma APO 150-600mm f/5-6.3 DG OS HSM lens ・ Sigma approximation ・ Sigma Aquarii ・ Sigma Aquilae ・ Sigma Arae ・ Sigma Arietis ・ Sigma Aurigae ・ Sigma baryon ・ Sigma Beauty ・ Sigma Beta ・ Sigma Beta Delta ・ Sigma Beta Rho ・ Sigma bond ・ Sigma Boötis ・ Sigma Cancri ・ Sigma Canis Majoris ・ Sigma Capricorni ・ Sigma Cassiopeiae 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 Sigma Aquilae ： ウィキペディア英語版 Sigma Aquilae Sigma Aquilae (σ Aql, σ Aquilae) is the Bayer designation for a binary star system in the equatorial constellation of Aquila. The baseline apparent magnitude of the pair is +5.17,〔 which, according to the Bortle Dark-Sky Scale, is bright enough to be seen with the naked eye from suburban skies. Because of the Earth's orbit about the Sun, this system has an annual parallax shift of 4.18 mas.〔 This provides a distance estimate of approximately . Sigma Aquilae is a double-lined〔 spectroscopic binary system consisting of two massive B-type main sequence stars; each has a stellar classification of B3 V.〔 They are detached components,〔 which means the two stars are sufficiently distant from each other that neither fills its Roche lobe. Because the orbital plane lies close to the line of sight with the Earth, they form a Beta Lyrae-type eclipsing binary variable star system.〔 The brightness of the pair decreases during each eclipse, which occurs with a frequency determined by their orbital period of 1.95026 days. During the eclipse of the primary component the net magnitude decreases by 0.20; the eclipse of the secondary component results in a magnitude decrease of 0.10.〔 ==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「Sigma Aquilae」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.