翻訳と辞書 Words near each other ・ Zeta Crucis ・ Zeta Cygni ・ Zeta Delphini ・ Zeta Delta Xi ・ Zeta distribution ・ Zeta Doradus ・ Zeta Draconis ・ Zeta Equulei ・ Zeta Eridani ・ Zeta function (operator) ・ Zeta function regularization ・ Zeta function universality ・ Zeta Geminorum ・ Zeta Gruis ・ Zeta Herculis ・ Zeta Herculis Moving Group ・ Zeta Horologii ・ Zeta Hydrae ・ Zeta Hydri ・ Zeta Indi ・ Zeta Instrument Processor Interface ・ Zeta Interactive ・ Zeta Island, Bermuda ・ Zeta Leonis ・ Zeta Leporis ・ Zeta Lupi ・ Zeta Lyrae ・ Zeta Major ・ Zeta Makripoulia ・ Zeta Mensae 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 Herculis Moving Group ： ウィキペディア英語版 Zeta Herculis Moving Group Zeta Herculis Moving Group is a set of stars that share a common motion through space. The existence of this moving group was first published in 1958 by Olin J. Eggen. Based upon the high velocity motion of the star Zeta Herculis through space, he searched for stars that were following a similar velocity and direction. A total of 22 candidate members were identified. Among the group members he included β Hydri, ρ Persei, η Reticuli, φ1 Lupi, ζ Herculis and ε Octantis. He estimated the group velocity at 74.5 km/s.〔 〕 In 1970, Richard Woolley refined the list to ten stars, including φ2 Pavonis and ζ1/ζ2 Reticuli as members of this cluster.〔 〕 The parallel motion of the stars in this group implies a common origin, and hence a similar age and composition. The membership of ζ Herculis and HD 158614 came into question because their composition appeared to show they were much younger than other members of the group. The average age was estimated as , while ζ Herculis was estimated as 6.3 billion years in age. However, a statistical analysis of the metallicity for stars in this group showed no difference from a comparison sample, indicating that it may not be possible to determine more information about this group based on the composition of its members. ==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 Herculis Moving Group」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.