...The original text without the "New" was compiled by J. Herschel, and was expanded in 1888 by Danish astronomer Johan Ludvig Emil Dreyer (1852-1926) to form the NGC. Dreyer published the Index Catalogue of Nebulae and Clusters of Stars, an additional catalog of the NGC star catalog, in 1995 and 1906. In 1973, the Revised NGC was published after checking this with the Palomar Photographic Atlas, and according to this, about 80% of the NGC objects are outside the Milky Way Galaxy, 10% are within the Galaxy, and the remaining 10% are confirmed to exist. ... *Some of the terminology that refers to the "IC Star Catalog" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…Newを冠しない原典はJ.ハーシェルが編纂,これをデンマークの天文学者ドライアーJohan Ludvig Emil Dreyer(1852‐1926)が1888年に増補してNGCとした。ドライアーは95年,1906年にNGC星表の追加表IC星表Index Catalogue of Nebulae and Clusters of Starsを刊行。73年これをパロマー写真星図でチェックしてRevised NGCが刊行されたが,それによると,NGC天体の約8割は銀河系外,1割は系内で,残り1割は実在が確認されないという。… ※「IC 星表」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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