Chemo-dynamical Mapping of the Galactic Bulge (A11*)

我们的银河系有一个被尘埃遮蔽的条状假凸起，具有高度复杂的多组分结构。特别是它的旧组件鲜为人知。我们将主要使用来自OGLE-IV和VVVX时域巡天的RR天琴座恒星作为真正古老的示踪剂，其光曲线提供距离和金属丰度信息，这些长基线巡天和盖亚的适当运动，以及来自SDSS-V的径向速度和详细元素丰度，我们计划通过CRC基金加入SDSS-V，探索银河系内部的早期运动学和化学演化。揭示了早期合并的作用和限制星系形成模型。

Our Milky Way has a dust-obscured barred pseudobulge with a highly complex, multiple-component structure. Particularly its old components are poorly known. We will use mainly RR Lyrae stars from the OGLE-IV and VVVX time-domain surveys as genuinely old tracers whose light curves provide distances and metallicity information, proper motions from these long-base-line surveys and Gaia, and radial velocities and detailed elemental abundances from SDSS-V, which we plan to join through CRC funds, to explore the early kinematic and chemical evolution of the inner parts of the Milky Way, revealing the role of early mergers and constraining Galactic formation models.