Are the galactic bulga and bar the same ?
Astrophysics
2007-05-23 v1
Abstract
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.
Keywords
Cite
@article{arxiv.astro-ph/9709196,
title = {Are the galactic bulga and bar the same ?},
author = {Y. K. Ng},
journal= {arXiv preprint arXiv:astro-ph/9709196},
year = {2007}
}
Comments
2 pages LaTeX, to appear in proceedings IAU symposium 184 ``The Central Region of the Galaxy and Galaxies'', August 18-22, 1997, Kyoto (Japan), Y. Sofue (ed.)