Spectral analysis of the secondary in the AA Dor system with PHOENIX/3D

该项目的目标是计算AA Dor后共包络双星系统的低质量次级星的辐射大气的全三维辐射传输模型。该系统有许多高质量的观测，例如使用UVES和XSHOOTER。主星是一颗有效温度为42000K的sdO恒星，它辐射并强烈加热了临近的副星的白天面，而夜晚面则保持在低温。在之前的一个项目中，我们用改进的微物理（光谱线和尘埃数据、状态方程、NLTE）计算了新的1.5D“拼凑”模型。在这个项目中，这些模型将与我们的3D辐射传输模拟相结合，生成与相位相关的空间分辨光谱图像，以及AA Dor次级和系统作为一个整体的光谱。这些结果将与现有的观测数据进行比较，并用于分析光谱。

This project's goal is to compute full 3D radiative transfer models of the irradiated atmosphere of the low mass secondary of the AA Dor post common envelope binary system. There are many high quality observations of this system, e.g., with UVES and XSHOOTER. The primary is a sdO star with an effective temperature of 42000K which irradiates and strongly heats the day-side of the close by secondary, whereas the night-side remains at low temperature. In a previous project we have computed new 1.5D "patchwork'' models with improved micro-physics (spectral lines and dust data, equation of state, NLTE). These models will be combined in this project with our 3D radiative transfer simulations to generate phase-dependent spatially resolved spectro-images and spectra of the AA Dor secondary and the system as a unit. The results will be compared with the existing observed data and used to analyse the spectra.