翻訳と辞書 Words near each other ・ DXXX-TV ・ DXY.cn ・ DXYM ・ DXYQ ・ DXYR ・ DXYS ・ DXYZ ・ DXZA-AM ・ DXZA-FM ・ DXZB-TV ・ Dy ・ DY (rapper) ・ DY 365 ・ DY Patil Stadium ・ DY Persei ・ DY Persei variable ・ DY postcode area ・ Dy Saveth ・ DY Works ・ Dy-Na-Mi-Tee ・ DYA ・ DYA framework ・ DYAB ・ Dyab Abou Jahjah ・ DYAB-FM ・ DYAB-TV ・ Dyaberi ・ Dyabyla ・ DYAC ・ DYAC-TV 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 DY Persei variable ： ウィキペディア英語版 DY Persei variable DY Persei variables are a subclass of R Coronae Borealis (R CrB) variables. They are carbon-rich asymptotic giant branch (AGB) stars that exhibit pulsational variability of AGB stars and irregular fades similar to R CrB stars. The star DY Persei is the prototype of this tiny class of variable stars. Only DY Persei itself was known in out galaxy until 2008 when systematic catalogue searches for R CrB variables discovered a 17th magnitude (at maximum) example. Since then automated searches have confirmed another four, including one of magnitude 5.9 at maximum. There are also several candidates that have not yet been observed to fade, and several DY Per stars in the Large Magellanic Cloud. Although DY Persei variables have been considered a subset of the R CrB variables because of their irregular fades and carbon-rich spectra, they may simply be an unusual type of Carbon star unrelated to the more massive and more luminous R CrB variables. The fades may be caused by obscuring ejection events rather than carbon condensation in the atmospheres of the stars.〔 ==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「DY Persei 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.