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主要星系目录

被星光遮蔽的矮星系PGC 39058
哈伯太空望遠鏡拍攝的橢圓星系PGC 6240影像[1]

主要星系目錄(英語:Catalogue of Principal Galaxies,縮寫:PGC)是在1989年出版,以B1950英语Equinox (celestial coordinates)J2000曆元天球赤道坐標交叉識別,列出了73,197星系天體目錄。它是基於1983年開始啟動的里昂-默冬星系資料庫英语Lyon-Meudon Extragalactic Database(LEDA)編輯製成的[2]。 40,932 坐標(56%)的標準差小於10″。共列出了來自38個最常見來源的131,601個名字。給出了每個星系的可用平均值數據[3]

里昂-默冬星系資料庫最終擴展為HyperLEDA英语Lyon-Meudon Extragalactic Database,是一個包含數百萬星系的資料庫。原始PGC目錄中的星系在HyperLEDA中仍以原始PGC編號進行編目。其它星系也分配了編號,然而對於那些不在原始PGC目錄中的星系,並不建議使用新編的PGC編號作為名稱[2]

例子

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PGC 39058

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PGC 39058矮星系,它位於星座天龍座中,距離我們約1,400萬光年。它相對較近,但被在前方銀河系內一顆明亮恆星的光遮蔽。

PGC 6240

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PGC 6240(也稱為白玫瑰星系)是位於星座水蛇座的一個大透鏡星系,距離地球大約3億4600萬光年

相關條目

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參考資料

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  1. ^ Soft shells and strange star clusters. ESA/Hubble Press Release. [12 October 2013]. (原始内容存档于2020-11-11). 
  2. ^ 2.0 2.1 HYPERLEDA Help: Internal number: pgc. HyperLeda. [19 January 2017]. (原始内容存档于2019-09-18). 
  3. ^ Paturel, G.; Fouque, P.; Bottinelli, L.; Gouguenheim, L. An extragalactic database. I - The Catalogue of Principal Galaxies. Astronomy and Astrophysics Supplement Series. November 1989, 80 (3): 299–315. Bibcode:1989A&AS...80..299P. ISSN 0365-0138. 

外部連結

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主要星系目录
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