Photometric study of the star with changing Blazhko effect: TV Bootis
Photometric study of the star with changing Blazhko effect: TV Bootis
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具有变化 Blazhko 效应的恒星的光度研究：TV Bootis
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Zejda
中科院分区：
文献类型：
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作者：
M. Skarka;M. Zejda
这项研究研究了光曲线的周期性调制
RRC STAR TV BOO及其物理参数的研究
光度学数据。这种现象被称为布拉日科效应，
在RRC恒星中是相当罕见的。基于小波变换的频域分析
在马萨里克大学天文台(MUO)收集的数据
还使用了显示对称结构的SuperWASP数据
主脉动频率及其谐波附近的峰值，
其指示布拉日科周期的两个调制分量。
主要调制周期为9.7374+-
0.0054 d.这是已知的布拉日科时期最短的时期之一
在RRC明星中。第二调制周期(21.5±-0.2d)
导致布拉日科效应本身的变化。一些指数显示
电视上的嘘声可能会受到订单长期变化的影响
很多年了。通过MUO V估计基本物理参数
使用傅立叶参数的光线曲线解决方案。电视上的嘘声似乎
是一颗[Fe/H]=-1.89的低金属丰度恒星。
This study investigates periodic modulation of the light curve
of the RRc star TV Boo and its physical parameters based on
photometric data. This phenomenon, known as the Blazhko effect,
is quite rare among RRc stars. The frequency analysis based on
the data gathered at the Masaryk University Observatory (MUO)
and also using SuperWASP data revealed symmetrically structured
peaks around the main pulsation frequency and its harmonics,
which indicate two modulation components of the Blazhko period.
The main modulation periodicity was found to be 9.7374 +-
0.0054 d. This is one of the shortest known Blazhko periods
among RRc stars. The second modulation period (21.5 +- 0.2 d)
causes changes of the Blazhko effect itself. Some indices show
that TV Boo could be affected by long-term changes of the order
of years. Basic physical parameters were estimated via an MUO V
light-curve solution using Fourier parameters. TV Boo seems to
be a low-metallicity star with [Fe/H] = -1.89.