Are the galactic bulga and bar the same ?

Details Are the galactic bulga and bar the same ? Are the galactic bulga and bar the same ?

1997-09-19

arxiv.org/abs/astro-ph/9709196v1

Astronomy and Astrophysics

Astrophysics

2 pages LaTeX, to appear in proceedings IAU symposium 184 ``The Central Region of the Galaxy and Galaxies'', August 18-22, 199

Scientific paper

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.

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