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

Published online by Cambridge University Press:  01 July 2007

H. Wozniak  and
L. Michel-Dansac
H. Wozniak
Affiliation:
Observatory of Lyon, F-69561 Saint-Genis-Laval cedex, France email: herve.wozniak@obs.univ-lyon1.fr
L. Michel-Dansac
Affiliation:
IATE, Observatorio astronomico, X5000BGR Cordoba, Argentina email: leo@oac.uncor.edu
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Abstract

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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.

Keywords

galaxies: bulgesgalaxies: evolutiongalaxies: formationgalaxies: nucleigalaxies: stellar contentgalaxies: structuremethods: n-body simulations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 143 - 148
Copyright
Copyright © International Astronomical Union 2008

References

Michel-Dansac, L. & Wozniak, H. 2004, A&A, 421, 863Google Scholar
Michel-Dansac, L. & Wozniak, H. 2008, A&A, submittedGoogle Scholar
Wozniak, H. & Michel-Dansac, L. 2007, MNRAS, submittedGoogle Scholar