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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 HL Tau 76 ： ウィキペディア英語版 HL Tau 76 HL Tau 76 is a variable white dwarf star of the DAV (or ZZ Ceti) type. It was observed by G. Haro and W. J. Luyten in 1961,〔 (Nueva estrella enana blanca en las nubes obscuras del Toro ), G. Haro and W. J. Luyten, ''Bol. Obs. Tonantzintla y Tacubaya'' 3, 35, no. 21.〕〔 and was the first variable white dwarf discovered when, in 1968, Arlo U. Landolt found that it varied in brightness with a period of approximately 749.5 seconds, or 12.5 minutes.〔(A New Short-Period Blue Variable ), Arlo U. Landolt, ''Astrophysical Journal'' 153, #1 (July 1968), pp. 151–164.〕 Like other DAV white dwarfs, its variability arises from non-radial gravity wave pulsations within itself.〔(Physics of white dwarf stars ), D. Koester and G. Chanmugam, ''Reports on Progress in Physics'' 53 (1990), pp. 837–915.〕, § 7. Later observation and analysis has found HL Tau 76 to pulsate in over 40 independent vibrational modes, with periods between 380 seconds and 1390 seconds.〔(Whole Earth telescope observations of the ZZ Ceti star HL Tau 76 ), N. Dolez, G. Vauclair, G., S. J. Kleinman, M. Chevreton, J. N. Fu, J.-E. Solheim, J. M. González Perez, A. Ulla, L. Fraga, A. Kanaan, M. Reed, S. Kawaler, M. S. O'Brien, T. S. Metcalfe, R. E. Nather, D. Sanwal, E. W. Klumpe, A. Mukadam, M. A. Wood, T. J. Ahrens, N. Silvestri, D. Sullivan, T. Sullivan, X. J. Jiang, D. W. Xu, B. N. Ashoka, E. Leibowitz, P. Ibbetson, E. Ofek, D. Kilkenny, E. G. Meištas, D. Alisauskas, R. Janulis, R. Kalytis, P. Moskalik, S. Zola, J. Krzesinski, W. Ogloza, G. Handler, R. Silvotti, and S. Bernabei, ''Astronomy and Astrophysics'' 446, #1 (January 2006), pp. 237–257.〕 ==Notes and 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「HL Tau 76」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.