Discovery of a New Multiperiodic δ Scuti Variable Star
Discovery of a New Multiperiodic δ Scuti Variable Star
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DOI：
10.1007/s10509-005-9034-3
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发表时间：
2006-08
影响因子：
1.9
通讯作者：
A. Zhou;A. Zhou;Deokkeun An;J. Eggen;M. Reed;D. Terndrup;S. L. Harms
中科院分区：
文献类型：
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作者：
A. Zhou;A. Zhou;Deokkeun An;J. Eggen;M. Reed;D. Terndrup;S. L. Harms
本文报道了在脉动sdB星星KPD 2109+4401中发现的一颗新的短周期脉动变星星星。这颗星星连续10个晚上被观测到。根据光变曲线，我们探测到三个脉动频率，分别为10.308、4.023和11.075周期d− 1，振幅分别为11.1、4.3和4.2毫量级。利用现有的资料从其他天空调查，我们估计光谱类型的晚F和其他大气参数。然后讨论了该星星的观测性质。最后将其归类为一颗新的低振幅多周期δ Scuti星星。一个未来的兴趣是解决准确地确定星星的光谱类型，然后判断一个可能的联系，γ剑鱼座型脉动。
We report on the discovery of a new short-periodic pulsating variable star in the field of the pulsating sdB star KPD 2109+4401. The star was observed on 10 consecutive nights. Based on the light curves, we detect three pulsation frequencies at 10.308, 4.023 and 11.075 cycle d−1with amplitudes of 11.1, 4.3 and 4.2 milli-magnitudes, respectively. Using the existing data from other sky surveys, we estimate a spectral type of late F and other atmospheric parameters. Then we discuss the observational properties of the star. Finally it is classified to be a new low-amplitude multiperiodic δ Scuti star. A future interest addressed is to accurately determine the star's spectral type and then to judge a possible link to γ Doradus-type pulsation.