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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Super star clusters ： ウィキペディア英語版 Super star cluster A super star cluster (SSC) is a very massive young open cluster that is thought to be the precursor of a globular cluster. They typically contain a very large number of young, massive stars that ionize a surrounding H II region, similar to our Milky Way's so-called "Ultra dense H II regions (UDHIIs)". An SSC's H II region is in turn surrounded by a cocoon of dust. In many cases, the stars and the H II regions will be invisible to optical observations due to high levels of extinction. As a result, the youngest SSCs are best observed in radio and infrared. The unique characteristics of SSCs are their large electron densities $n\_e=10^3$–$10^6$ cm$^$ and pressures $P/$$k\_b$$=10^7$–$10^$ K cm$^$.〔 ==List== 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「Super star cluster」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.