Detection of optical oscillations of the intermediate polar V709 Cassiopeae (RX J0028.8+5917)
Detection of optical oscillations of the intermediate polar V709 Cassiopeae (RX J0028.8+5917)
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中间极 V709 Cassiopeae 光学振荡的检测 (RX J0028.8 5917)
DOI：
10.1051/0004-6361:20000259
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发表时间：
2001
影响因子：
6.5
通讯作者：
V. Kozhevnikov
中科院分区：
文献类型：
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作者：
V. Kozhevnikov
我们报告的低振幅光学振荡的检测周期为312.77秒和317.94秒的中间极性V709 Cas。在测量精度范围内，这些周期与Motch等人（[CITE]）报告的X射线周期一致，并由Norton等人（[CITE]）进行了改进，如果我们指定轨道周期为5.4 h，则其会合对应物是Motch等人（[CITE]）报告的两个可能的轨道周期之一。周期为317.94 s的振荡具有较强的一次谐波，这证明了该振荡的非正弦脉冲轮廓。在317.94 s的周期折叠的数据揭示了这种振荡的双峰脉冲轮廓，这是高度可变的从晚上到晚上。在V709 Cas的光变曲线中还检测到一个弱的周期信号，对应于周期为312.77 s的振荡的第一谐波。
We report detection of low-amplitude optical oscillations at periods of 312.77 s and 317.94 s of the intermediate polar V709 Cas. Within the accuracy of measurement these periods agree with the X-ray period reported by Motch et al. ([CITE]) and refined by Norton et al. ([CITE]) and its synodic counterpart if we specify an orbital period of 5.4 h, which is one of the two possible orbital periods reported by Motch et al. ([CITE]). The oscillation at a period of 317.94 s has the strong first harmonic which is evidence for the nonsinusoidal pulse profile of this oscillation. The data folded at a period of 317.94 s reveal a double-peaked pulse profile of this oscillation, which is highly variable from night to night. A weak periodic signal corresponding to the first harmonic of the oscillation at a period of 312.77 s is also detected in the lightcurves of V709 Cas.