Modelling of Aging Planetary Nebulae Interacting with the Interstellar Medium - Spatial Distribution of Nebular Matter in the Line of Sight

行星状星云（PNe）和它们的中心恒星（CS）是检验恒星演化理论的理想工具：例如CS的光球层性质是理论演化预测的严格约束。观测技术、谱分析和数值方法的最新发展有助于密切研究和一致地模拟PNe及其CS。这改善了我们对后AGB恒星演化的看法。老化的PNe与周围的星际物质（ISM）的相互作用，曾经被认为是一种好奇心，必须被视为一种常见的现象。由于星际磁场（ISMF）在形成PNe中起着重要作用，PNe是非常适合探测ISM和ISMF的对象。分析这一现象的先决条件之一是一个可靠的图片的三维形状的PNE。我们建议采取高分辨率光谱的相互作用PNe，以获得有关他们的速度结构和空间分布的星云物质的视线。除了现有的窄带图像外，这将为它们的建模提供严格的限制。

Planetary nebulae (PNe) and their central stars (CS) are ideal tools to test stellar evolutionary theory: E.g. photospheric properties of the CS are stringent constraints for theoretical evolutionary predictions. Recent developments in observational techniques, spectral analysis and numerical methods facilitate to examine closely and model consistently PNe and their CS. This improves our picture of post-AGB stellar evolution. The interaction of the aging PNe with the ambient interstellar matter (ISM), once considered a curiosity, has to be regarded as a common phenomenon. Since the interstellar magnetic field (ISMF) plays an important role in shaping of PNe, PNe are well suited objects to probe the ISM and the ISMF. One of the prerequisites for an analysis of this phenomenon is a reliable picture of the 3-dimensional shape of the PNe. We propose to take high-resolution spectra of interacting PNe in order to derive information about their velocity structure and spatial distribution of nebular matter in the line of sight. In addition to available narrow-band images, this will give stringent constraints for their modelling.