Reanalysis of the orbital period variations of two DLMR overcontact binaries: FG Hya and GR Vir
Reanalysis of the orbital period variations of two DLMR overcontact binaries: FG Hya and GR Vir
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重新分析两个 DLMR 过接触双星:FG Hya 和 GR Vir 的轨道周期变化
DOI:
10.1088/1674-4527/17/12/128
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发表时间:
2017-11
影响因子:
1.8
通讯作者:
Ke Hu
中科院分区:
文献类型:
--
作者:
Xu-Dong Zhang;Yun-Xia Yu;Fu-Yuan Xiang;Ke Hu
We investigate orbital period changes of two deep, low mass ratio (DLMR) overcontact W UMa-type binaries, FG Hya and GR Vir. It is found that the orbital period of FG Hya shows a cyclic change with a period of P mod = 54.44 yr . The cyclic oscillation may be due to a third body in an eccentric orbit, while the orbital period of GR Vir shows a periodic variation with a period of P mod = 28.56 yr and an amplitude of A = 0.0352 d. The periodic variation of GR Vir can be interpreted as a result of either the light-time effect of an unseen third body or the magnetic activity cycle.
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10.1002/asna.19342531003
发表时间:
1934-11
期刊:
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通讯作者:
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影响因子:
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