Unveiling Dark Matter and Fossil Records in the Solar Neighborhood (A07)

即使有了大规模的光谱调查和即将到来的盖亚天文测量数据，要始终如一地确定总引力势并构建银河系的动力学模型仍然是一项挑战。我们将我们的似然方法与史瓦西轨道叠加法结合起来，一致地导出了恒星亚群的引力势和相空间分布函数，这些函数依赖于它们的丰度模式。我们可以解决一些重要的问题，比如：当地的暗物质密度是多少，哪些恒星起源于被破坏的卫星星系？

Even with the large spectroscopic surveys and the upcoming Gaia astrometric data, it is a chal-lenge to determine consistently the total gravitational potential and to construct a dynamical model of the Milky Way. We combine our likelihood approach with Schwarzschild¿s orbit-superposition method to derive consistently the gravitational potential and the phase space distribution functions of stellar subpopulations dependent on their abundance pattern. We can address important questions like: What is the local Dark Matter density and which stars originate from disrupted satellite galaxies?