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arXiv 1107.0277astro-ph.SR
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临界低质量比密近双星系统V1191 Cyg

Marginally low mass ratio close binary system V1191 Cyg

B. Ulas, B. Kalomeni, V. Keskin, O. Kose, K. Yakut

摘要:

在这项研究中,我们提出的光度和光谱的变化,极小的质量比($q\simeq 0.1$)晚型接触二元系统\astrobj{V1191 Cyg}。已确定热伴体和冷伴体的参数为$M_\textrm{h}$ = 0.13(1)$M_{\odot}$,$M_\textrm{c}$ = 1.29(8)$M_{\odot}$,$R_\textrm{h}$ = 0.52(15)$R_{\odot}$,$R_\textrm{c}$ = 1.31(18)$R_{\odot}$,$L_\textrm{h}$ = 0.46(25)$L_{\odot}$,$L_\textrm{c}$ = 2.71(80)$L_{\odot}$,各组分间的距离为$a$ = 2.20(8)$R_{\odot}$,系统的距离估计为278(31)pc。最小值的时间的分析表明,周期增加$\frac{dP}{dt}=1.3(1)\times 10^{-6}$天/年,揭示了一个非常高的质量转移率$\frac{dM}{dt}=2.0(4)\times 10^{-7}$ $M_{\odot}$ /年,从质量较小的组件更大的。新的观测表明,光变曲线最小值的深度已经互换。

英文摘要:

In this study, we present photometric and spectroscopic variations of the extremely small mass ratio ($q\simeq 0.1$) late-type contact binary system \astrobj{V1191 Cyg}. The parameters for the hot and cooler companions have been determined as $M_\textrm{h}$ = 0.13 (1) $M_{\odot}$, $M_\textrm{c}$ = 1.29 (8) $M_{\odot}$, $R_\textrm{h}$ = 0.52 (15) $R_{\odot}$, $R_\textrm{c}$ = 1.31 (18) $R_{\odot}$, $L_\textrm{h}$ = 0.46 (25) $L_{\odot}$, $L_\textrm{c}$ = 2.71 (80) $L_{\odot}$, the separation of the components is $a$= 2.20(8) $R_{\odot}$ and the distance of the system is estimated as 278(31) pc. Analyses of the times of minima indicates a period increase of $\frac{dP}{dt}=1.3(1)\times 10^{-6}$ days/yr that reveals a very high mass transfer rate of $\frac{dM}{dt}=2.0(4)\times 10^{-7}$$M_{\odot}$/yr from the less massive component to the more massive one. New observations show that the depths of the minima of the light curve have been interchanged.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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