Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-19
Astronomy and Astrophysics
Astrophysics
Conference proceedings, IAU Symposium 245, Formation and Evolution of Galaxy Bulges, Oxford, July 16-20 2007
Scientific paper
10.1017/S1743921308017250
Galactic spheroids can form as a result of galaxy interactions and mergers of disks. Detailed analyses of the photometric properties, the intrinsic orbital structure, the line-of-sight velocity distributions and the kinemetry of simulated merger remnants, which depend critically on the geometry and the gas content of the interacting progenitors, indicate that low and intermediate mass rotating ellipticals can form from mergers of disks. The masses and metallicities of all massive ellipticals and the kinematics of some massive non-rotating ellipticals cannot be explained by binary mergers. Thus these galaxies might have formed in a different way.
Burkert Andreas
Jesseit Roland
Johansson Peter Hilding
Naab Thorsten
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