Nonradial pulsation of the delta Scuti star BU CANCRI in the Praesepe cluster.
Nonradial pulsation of the delta Scuti star BU CANCRI in the Praesepe cluster.
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DOI：
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发表时间：
1993-04
影响因子：
6.5
通讯作者：
M. Breger;J. Stich;R. Garrido;B. Martin;Jiang Shi-Yuang;Zhiping Li;D. Hube;W. Ostermann;
中科院分区：
文献类型：
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作者：
M. Breger;J. Stich;R. Garrido;B. Martin;Jiang Shi-Yuang;Zhiping Li;D. Hube;W. Ostermann;
1989 年 2 月，三大洲的五个天文台获得了普拉塞佩星团中 δ Scuti 星 BU Cnc 的多站点光电光度测量结果。检测到具有毫级振幅的五个脉动频率（19.76、17.36、16.69、18.62和19.87周期d -1 ），信号/噪声振幅比≥4.0。 23.91 个周期 d -1 处的附加频率也可能存在。该解决方案将观测结果拟合到 ± 2.6 毫磁格。脉动模式可以用具有至少两个不同值的p 3±1 模式来识别。最多只能有两种 (= 0) 径向模式
Multisite photoelectric photometry of the δ Scuti star BU Cnc in the Prasepe cluster was obtained during 1989 February at five observatories on three continents. Five pulsation frequencies (19.76, 17.36, 16.69, 18.62 and 19.87 cycles d −1 ) with millimag amplitudes were detected with a signal/noise amplitude ratio ≥ 4.0. An additional frequency at 23.91 cycles d −1 might also exist. The solution fits the observations to ± 2.6 millimag. The pulsation modes can be identified with p 3±1 modes with at least two different values. Only up to two ( = 0) radial modes are possible