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arXiv 0909.2012astro-ph.SR
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RS狐狸座双星的三维多普勒断层成像

Three-Dimensional Doppler Tomography of the RS Vulpeculae Interacting Binary

M. Richards, O. Sharova, M. Agafonov

摘要:

本文用三维多普勒层析技术研究了狐狸座RS相互作用双星中H $α$的发射源。这个双星的二维断层图像表明,大部分的辐射来自冷的质量损失恒星,还有额外的证据表明气体在预测的轨道附近流动。然而,3D断层图像揭示了在从-240到-360 km s{ $^{-1}$ }的高$V_z$速度下更明显的气流流动的令人惊讶的证据。这种行为很可能是由冷恒星上的磁场活动引起的,因为中心速度平面(定义为$V_z$ = 0 km s{ $^{-1}$ })应该与双星的轨道平面重合,如果流只受引力支配的话。RS Vul已经被探测为X射线和射电源,并且RS Vul气体流可能已经被磁场线偏转。这种流动是明显不同的,发现在类流状态的U CrB,其中的气体流动主要局限于中心速度平面。

英文摘要:

Three-dimensional Doppler tomography has been used to study the H$α$ emission sources in the RS Vulpeculae interacting binary. The 2D tomogram of this binary suggested that most of the emission arose from the cool mass losing star with additional evidence of gas flowing close to the predicted trajectory. However, the 3D tomogram revealed surprising evidence of a more pronounced gas stream flow at high $V_z$ velocities from -240 to -360 km s{$^{-1}$}. This behavior is most likely caused by magnetic activity on the cool star since the central velocity plane, defined by $V_z$ = 0 km s{$^{-1}$}, should be coincident with the orbital plane of the binary if the flow is dominated by gravitational forces only. RS Vul has been detected as both an X-ray and a radio source, and it is possible that the RS Vul gas stream may have been deflected by magnetic field lines. This flow is distinctly different from that found in the streamlike state of U CrB, in which the gas flow was confined mostly to the central velocity plane.

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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