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泰爾讓7, 是鬆散和年輕的球狀星團, 被認為起源於人馬座矮椭球星系, 並與之有物理上的關聯, 相較之下它是富金屬, 它的金屬量是, 並且估計年齡是75億歲, 有少量的鎳, 因為有著相似的化學特徵, 這支持它是人馬座矮椭球星系的成員, 它有豐富的藍掉隊星, 並且強烈的朝向中心集中, 它的平均亮度分佈在mv, 它的半光度半徑, 5秒差距, 哈伯太空望遠鏡拍攝的, 視直徑3, credit, nasa, 和a, sarajedini, 佛羅里達大學, acknowledgement, gilles, chapdelain. 泰爾讓7是鬆散和年輕的球狀星團 被認為起源於人馬座矮椭球星系 Sag DEG 並與之有物理上的關聯 相較之下它是富金屬 它的金屬量是 Fe H 0 6 6 並且估計年齡是75億歲 4 泰爾讓7有少量的鎳 Ni Fe 0 2 因為有著相似的化學特徵 這支持它是人馬座矮椭球星系的成員 7 它有豐富的藍掉隊星 並且強烈的朝向中心集中 8 它的平均亮度分佈在Mv 5 05 9 它的半光度半徑 Rh 6 5秒差距 10 泰爾讓7哈伯太空望遠鏡拍攝的泰爾讓7 視直徑3 5 Credit NASA ESA 和A Sarajedini 佛羅里達大學 Acknowledgement Gilles Chapdelaine觀測數據 J2000 曆元 星座人馬座赤經19h 17m 43 92s 1 赤緯 34 39 27 8 1 距離75 7 kly 23 2 kpc 2 視星等 V 12 0 2 視直徑 V 7 3 2 物理性質半徑160 光年 a VHB17 76 3 估計年齡7 5 Gyr 4 值得注意的特色young extragalactic globular其它名稱Ter 7 4 GCl 109 1 5 參見 球狀星團 球狀星團表 目录 1 歷史 2 年輕的球狀星團 3 註解 4 參考資料歷史 编辑泰爾讓7是法國天文學家阿戈普 泰爾讓 英语 Agop Terzan 在1968年發現的 11 最亮的 12 六個球狀星團之一 12 年輕的球狀星團 编辑幾乎所有的銀河系的银晕的球狀星團是同時形成 12 15 Gyr 即使是位於遠處的NGC 2419 距離銀河中心約100 kpc 也有相似的年齡 這種趨勢也適用於大麦哲伦星系和Fornax Dwarf 來自銀河中心的約140 kpc 發現的球狀團的年齡 註解 编辑 75 7 kly tan 7 3 2 160 ly radius參考資料 编辑 1 0 1 1 Goldsbury Ryan et al The ACS Survey of Galactic Globular Clusters X New Determinations of Centers for 65 Clusters The Astronomical Journal December 2010 140 6 1830 1837 Bibcode 2010AJ 140 1830G arXiv 1008 2755 nbsp doi 10 1088 0004 6256 140 6 1830 2 0 2 1 2 2 Terzan 7 seds 原始内容存档于2002 10 24 Wilson Barbara Obscure Globulars July 2 1995 2016 01 23 原始内容存档于2016 01 13 4 0 4 1 4 2 Geisler Doug Wallerstein George Smith Verne V Casetti Dinescu Dana I Chemical Abundances and Kinematics in Globular Clusters and Local Group Dwarf Galaxies and Their Implications for Formation Theories of the Galactic Halo The Publications of the Astronomical Society of the Pacific September 2007 119 859 939 961 Bibcode 2007PASP 119 939G arXiv 0708 0570 nbsp doi 10 1086 521990 SIMBAD Astronomical Object Database Results for Terzan 7 2008 01 27 原始内容存档于2020 05 17 Sbordone L Bonifacio P Marconi G Buonanno R Zaggia S Family ties Abundances in Terzan 7 a Sgr dSph globular cluster Astronomy and Astrophysics July 3 2005 437 3 905 910 Bibcode 2005A amp A 437 905S arXiv astro ph 0505307 nbsp doi 10 1051 0004 6361 20042315 Sbordone L Bonifacio P Marconi G Buonanno R Chemical abundances in Terzan 7 Memorie della Societa Astronomica Italiana 2004 75 396 Bibcode 2004MmSAI 75 396S Held Enrico V Rosenberg Alfred Saviane Ivo Momany Yazan 写于Pucon Chile Geisler D Grebel E K Minniti D 编 The Globular Cluster Terzan 7 in the Sagittarius Dwarf Spheroidal Galaxy Astronomical Society of the Pacific San Francisco March 12 16 2001 165 2002 Bibcode 2002IAUS 207 165H 请检查 publication date 中的日期值 帮助 van den Bergh Sidney The Luminosity Distribution of Globular Clusters in Dwarf Galaxies The Astronomical Journal July 2007 134 1 344 345 Bibcode 2007AJ 134 344V arXiv 0704 2226 nbsp doi 10 1086 518868 van den Bergh Sidney Young Globular Clusters and Dwarf Spheroidals The Astrophysical Journal February 2000 530 2 777 782 Bibcode 2000ApJ 530 777V arXiv astro ph 9910243 nbsp doi 10 1086 308413 Terzan Agop Six nouveaux amas stellaires Terzan 3 8 dans la region DU centre de la Voie lactee et les constellations DU Scorpion et DU Sagittaire C R Acad Sci 1968 267 Ser B 1245 1248 Bibcode 1968CRASB 267 1245T 12 0 12 1 Gottlieb Steve Sky and Telescope August 1 2000 100 2 112 ISSN 0037 6604 缺少或 title 为空 帮助 天球赤道座標 nbsp 19h 17m 43 5s 34 39 27 取自 https zh wikipedia org w index php title 泰爾讓7 amp oldid 71750304, 维基百科，wiki，书籍，书籍，图书馆，
