Time-resolved spectroscopy of the rapidly oscillating Ap star KIC 10195926?
Time-resolved spectroscopy of the rapidly oscillating Ap star KIC 10195926?
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快速振荡 Ap 星 KIC 10195926 的时间分辨光谱？
DOI：
10.1093/mnras/stu1533
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发表时间：
2014
影响因子：
4.8
通讯作者：
Elkin V
中科院分区：
文献类型：
--
作者：
Elkin V
我们报告了用斯巴鲁望远镜获得的化学性质特殊的Ap星KIC 10195926的高时间分辨率光谱分析。我们发现，与其他快速振荡的Ap恒星相比，该恒星的稀土元素过剩度较低。我们只从稀土和其他化学元素的光谱线中发现了脉动的上限。仅在Hα线的窄核心处发现脉动，振幅为171±41 ms−1，频率与开普勒观测的光度频率相对应。
We report an analysis of high time resolution spectra of the chemically peculiar Ap star KIC 10195926 obtained with the Subaru telescope. We find that the star has low overabundances of rare earth elements compared with other rapidly oscillating Ap stars. We found only upper limits for pulsations from spectral lines of rare earth and other chemical elements. Pulsation was found only for the narrow core of the Hα line with an amplitude of 171±41 ms− 1 and with the frequency corresponding to photometric frequency obtained from Kepler observations.