翻訳と辞書 Words near each other ・ BL 7.5-inch Mk II – V naval gun ・ BL 7.5-inch naval howitzer ・ BL 8 inch Mk I – VII naval gun ・ BL 8 inch Mk VIII naval gun ・ BL 8-inch howitzer ・ BL 8-inch howitzer Mk I–V ・ BL 8-inch howitzer Mk VI – VIII ・ BL 9.2 inch gun Mk IX–X ・ BL 9.2 inch gun Mk I–VII ・ BL 9.2 inch Mk XI naval gun ・ BL 9.2 inch naval gun Mk VIII ・ BL 9.2-inch howitzer ・ BL 9.2-inch Railway Gun ・ BL Boötis ・ BL Crucis ・ BL Herculis variable ・ BL Lac ・ BL Lac object ・ BL Lacerta ・ BL Lacertae ・ BL Mark X ・ BL O-Series engine ・ BL postcode area ・ BL Publishing ・ BL R-Series engine ・ BL S-Series engine ・ BL Telescopii ・ Bl(A)ck Tea Society ・ BL-1020 ・ BL1 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 BL Herculis variable ： ウィキペディア英語版 BL Herculis variable BL Herculis variables are a type of variable star with low luminosity and mass that have a period of less than eight days. They are pulsating stars making up a subclass of Type II Cepheids with light curves that frequently show a bump on the descending side for stars of the shortest periods and on the ascending side for longer period stars. 〔 Like other Type II Cepheids, they are very old population II stars found in the galaxy’s halo and globular clusters. Also, compared to other Type II Cepheids, BL Her variables have shorter periods and are fainter than W Virginis variables. Pulsating stars vary in spectral class as they vary in brightness and BL Herculis variables are normally class A at brightest and class F when most dim. When plotted on the Hertzsprung–Russell diagram they fall in-between W Virginis and RR Lyrae variables.〔 The prototype star, BL Herculis, varies between magnitude 9.7 and 10.6 in a period of 1.3 days. The brightest BL Herculis variables are: VY Pyxidis (7.7 mag max), V0553 Centauri (8.2), SW Tauri (9.3), RT Trianguli Australis (9.4), V0351 Cephei (9.5), BL Herculis (9.7), BD Cassiopeiae (10.8), and UY Eridani (10.9). 〔 ==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「BL Herculis variable」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.