畸变二进制分量的寄生偏心率
Spurious Eccentricities of Distorted Binary Components
摘要：
我讨论的物理失真的效果上的速度密切的二进制组件，以及我们如何可以使用由此产生的扭曲的速度曲线来约束一些属性的二进制系统，如倾角和质量比。精确的新速度5 Cet令人信服地检测这些扭曲与他们的理论预测的相位依赖性。我们甚至可以用这种速度曲线的扭曲来检验露西的对流引力暗化理论。观测到的TT Hya和5 Cet的扭曲要求这些系统的接触组件被重力暗化，可能比Lucy理论预测的要多一些，但显然没有辐射星的预期那么多。这些结果意味着没有可信的证据表明，偏心轨道的双星接触组件。我还提出了一些投机性的分析，观察到的属性的一个非旋转的共同信封，如果这样一个对象实际上可能存在，并讨论如何临边暗化的一些最近计算的模型大气的巨星可能会偏向我的速度曲线失真的结果，以及其他结果从广泛的分析双星。
英文摘要：
I discuss the effect of physical distortion on the velocities of close binary components and how we may use the resulting distortion of velocity curves to constrain some properties of binary systems, such as inclination and mass ratio. Precise new velocities for 5 Cet convincingly detect these distortions with their theoretically predicted phase dependence. We can even use such distortions of velocity curves to test Lucy's theory of convective gravity darkening. The observed distortions for TT Hya and 5 Cet require the contact components of those systems to be gravity darkened, probably somewhat more than predicted by Lucy's theory but clearly not as much as expected for a radiative star. These results imply there is no credible evidence for eccentric orbits in binaries with contact components. I also present some speculative analyses of the observed properties of a binary encased in a non-rotating common envelope, if such an object could actually exist, and discuss how the limb darkening of some recently calculated model atmospheres for giant stars may bias my resuts for velocity-curve distortions, as well as other results from a wide range of analyses of binary stars.
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