Spectroscopic eclipse mapping of mass-accreting Algol-type stars with pulsating components

我们想要利用高分辨率谱的时间序列来研究具有脉动分量的质量吸积Algol型系统。从包括日食在内的整个轨道周期内观测到的谱线轮廓变化的分析中，我们希望提取有关各分量的全球恒星参数以及初级恒星的脉动的信息。我们想要建立一个代码，来计算在圆盘积分光中观察到的食双星的合成恒星线轮廓。恒星参数将通过调整相应的模型参数，如自转速度、自转倾角和轨道轴、恒星半径、边缘变暗和恒星大气参数来获得，以符合观测结果。在日食期间，ALGOL类系统的脉动分量表现出非径向脉动模的幅度和相位调制。这些调制是由于月食分量引起的屏蔽效应造成的。我们的方法使用谱线的全部信息内容来模拟这种筛选。我们希望将非径向脉动模的计算包含在我们的模型中，并尝试使用它来通过日食映射来识别模式。结果将与恒星的地震学模型进行比较。

We want to investigate mass-accreting Algol-type systems with pulsating components by using time series of high-resolution spectra. From the analysis of spectral line profile variations observed over the full orbital period including eclipses we want to extract information on global stellar parameters of the components as well as on the pulsations of the primaries. We want to establish a code that computes synthetic stellar line profiles of eclipsing binaries observed in disk-integrated light. Stellar parameters will be derived by adjusting the corresponding model parameters like rotation velocity, inclinations of rotation and orbital axes, stellar radii, limb darkening, and parameters of the stellar atmospheres to fit the observations. During eclipses, the pulsating components of Algol-type systems show amplitude and phase modulations of the non-radial pulsation modes. These modulations are due to the screening effect caused by the eclipsing component. Our method models this screening using the full information content of spectral lines. We want to include the calculation of non-radial pulsation modes into our model and try to use it for a mode identification by eclipse mapping. Results will be compared to seismologic models of the stars.