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An overview is given of the results obtained about Galactic Structure studies towards the Galactic Centre from star counts. The results indicate the presence of an old, metal-rich population (Z=0.005-0.08; t=13-15 Gyr), presumably the old Galactic Bulge. In addition, a younger, less metal-rich population was found (Z=0.005-0.03}; t=8-9 Gyr), likely related to the tri-axial bar found in other studies. In Baade’s Window a ratio bulge/bar stars of approximately 1/2 was obtained from star counts.

生成讲解博客的中文版本

生成AI智能校验的中文版本