The formation of young B/PS bulges in edge-on barred galaxies

Details The formation of young B/PS bulges in edge-on barred galaxies The formation of young B/PS bulges in edge-on barred galaxies

2007-09-13

arxiv.org/abs/0709.1993v1

Astronomy and Astrophysics

Astrophysics

2 pages, 5 figures, to appear in IAU Symposium 245, Formation and Evolution of Galaxy Bulges, M. Bureau, E. Athanassoula, and

Scientific paper

10.1017/S1743921308017523

We report about the fact that the stellar population that is born in the gas inflowing towards the central regions can be vertically unstable leading to a B/PS feature remarkably bluer that the surrounding bulge. Using new chemodynamical simulations we show that this young population does not remain as flat as the gaseous nuclear disc and buckles out of the plane to form a new boxy bulge. We show that such a young B/PS bulge can be detected in colour maps.

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