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

银河核球的化学动力学测绘 (A11*)

• 批准号: 415882655
• 金额: --
• 依托单位: Astronomisches Rechen-Institut
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/415882655?language=en
• 关键词: Chemo; dynamical; Mapping; Galactic; Bulge

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.

我们的银河系有一个尘埃模糊的条状假球，具有高度复杂的多组分结构。尤其是它的老部件鲜为人知。我们将主要利用OGLE-IV和VVVX时域探测的RR天琴座恒星作为真正古老的示踪器，其光曲线提供了距离和金属丰度信息，这些长基线探测和GAIA的自行，以及SDSS-V的径向速度和详细的元素丰度，我们计划通过CRC基金加入，以探索银河系内部的早期运动学和化学演化，揭示早期合并的作用和制约银河系形成的模型。