THE NATURE OF V392 ORI: A NEAR-CONTACT BINARY WITH A δ SCUTI-TYPE COMPONENT
THE NATURE OF V392 ORI: A NEAR-CONTACT BINARY WITH A δ SCUTI-TYPE COMPONENT
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V392 Ori 的本质：具有 δ Scuti 型成分的近接触双星
DOI：
10.1088/0004-6256/150/1/37
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发表时间：
2015-07
期刊：
影响因子：
--
通讯作者：
Luo C.Q.
中科院分区：
文献类型：
--
作者：
张孝斌;Luo Y.P.;Wang K.;Luo C.Q.
本文介绍了短周期食双星V392 Ori的多色测光观测。结合模型和BVRI光变曲线的分析结果，讨论了二元系统的性质和光变曲线的变化。光变曲线的畸变与冷点模型成功地合成。测光结果表明，猎户座V392是一个半分离的近接触系统，较冷的次级成分填充，而初级成分几乎填充了它们的每一个洛希瓣。测得系统的质量比为0.247 ± 0.001，倾角为79.85 ± 0.03？.在此基础上，对各组分的物理参数进行了估算。“O-C？”分析表明，该系统的长期轨道周期正以每世纪-3.0秒的速度减少，这可能是由于该系统的非保守质量交换和质量损失，这可能是长期光变曲线变化的来源。通过从原始观测值中减去理论光变曲线，我们消除了食和邻近效应，从而研究了短期变化。剩余光的频率分析揭示了所有BVRI波段的35.5分钟的周期性。沿着讨论了内禀脉动的性质以及组分的演化。在文献中，我们第一次揭示了它的主要组成部分是一颗盾牌座δ星星。因此，我们将猎户座V392列为一个新的候选食双星，其组成部分为盾牌座δ。
This study presents multi-color photometric observations of the short-period eclipsing binary V392 Ori. Taking into account the results obtained from the models and analyses of the BVRI light curves, the nature of the binary system as well as the light-curve variations were discussed. The distortions of the light curves were successfully synthesized with a cool-spot model. The photometric solutions indicated that V392 Ori is a semi-detached, near-contact system with the cooler secondary component filling and the primary nearly filling each of their Roche lobes. The mass ratio of the system is determined to be 0.247 ± 0.001, and the inclination is derived to be 79 &fdg; 85 ± 0 &fdg; 03 ?> . Based on these results, the physical parameters of the components were estimated. The O − C ?> analysis indicates that the secular orbital period of the system is decreasing at a rate of −3.0 s per century, probably due to the nonconservative mass exchange and mass loss of the system, which could be the source of the long-term light-curve changes. By subtracting the theoretical light curves from the original observations, we remove the eclipse and proximity effects so as to investigate the short-term variations. Frequency analysis of the residual light reveals a periodicity of 35.5 minutes in all the BVRI bands. The nature of the intrinsic pulsations was discussed along with the evolution of the components. For the first time in the literature, we revealed that the primary component is a δ Scuti star. We thus list V392 Ori as a new candidate eclipsing binary with a δ Scuti component.
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DOI：
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发表时间：
1994
期刊：
--
影响因子：
--
作者：
J. S. Shaw
通讯作者：
J. S. Shaw
DOI：
10.1086/150986
发表时间：
1971-06
期刊：
The Astrophysical Journal
影响因子：
--
作者：
R. Wilson;E. Devinney
通讯作者：
R. Wilson;E. Devinney
DOI：
10.1553/cia155s17
发表时间：
2008-10
期刊：
Communications in Asteroseismology
影响因子：
--
作者：
W. Zima
通讯作者：
W. Zima
DOI：
10.1007/978-94-009-0679-2_20
发表时间：
1990
期刊：
--
影响因子：
--
作者：
J. S. Shaw
通讯作者：
J. S. Shaw
影响因子：
6.3
作者：
H. A. Dal;E. Si̇pahi̇
通讯作者：
H. A. Dal;E. Si̇pahi̇