天琴座β A及其不透明吸积盘的物理性质
Physical properties of beta Lyr A and its opaque accretion disk
摘要：
密近双星中的质量交换和质量损失会显著影响它们的演化，但这些过程的完整自洽理论仍有待发展。以前已经研究了由于~热点区域引起的辐射屏蔽或气流不同部分的~流体动力学相互作用等过程。为了检验各自的预测，有必要进行详细的观测双星进行大规模的质量交换，特别是对于那些在快速转移阶段。\bla是这样一个系统的原型，具有悠久而丰富的观测历史。我们的第一项研究的目标是定量估计的几何形状和物理性质的光学厚组件，即罗氏瓣填充质量损失的明星，和吸积盘周围的质量增加的明星\blae。在2013年为期约两周的活动期间，由NPOI、CHARA/MIRC和VEGA仪器对\bla的整个轨道进行了一系列连续可见光和近红外分光干涉观测，并在对该系统进行为期三年的监测期间获得了\ubvr光度观测。我们包括来自OAO~A-2、IUE和旅行者卫星的NUV和FUV观测。
英文摘要：
Mass exchange and mass loss in close binaries can significantly affect their evolution, but a complete self-consistent theory of these processes is still to be developed. Processes such as radiative shielding due to a~hot-spot region, or a~hydrodynamical interaction of different parts of the gas stream have been studied previously. In order to test the respective predictions, it is necessary to carry out detailed observations of binaries undergoing the largescale mass exchange, especially for those that are in the rapid transfer phase. \bla is an archetype of such a system, having a long and rich observational history. Our goal for this first study is to quantitatively estimate the geometry and physical properties of the optically thick components, namely the Roche-lobe filling mass-losing star, and the accretion disk surrounding the mass-gaining star of \blae. A series of continuum visible and NIR spectro-interferometric observations by the NPOI, CHARA/MIRC and VEGA instruments covering the whole orbit of \bla acquired during a~two-week campaign in 2013 were complemented with \ubvr\ photometric observations acquired during a three-year monitoring of the system. We included NUV and FUV observations from OAO~A-2, IUE, and Voyager satellites.
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