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Formation and evolution of galactic spheroids by mergers

Published online by Cambridge University Press:  01 July 2007

Thorsten Naab*
Affiliation:
University Observatory Munich, Scheinerstr. 1, 81679 Munich, Germany email: [email protected]
Andreas Burkert
Affiliation:
University Observatory Munich, Scheinerstr. 1, 81679 Munich, Germany email: [email protected]
Peter H. Johansson
Affiliation:
University Observatory Munich, Scheinerstr. 1, 81679 Munich, Germany email: [email protected]
Roland Jesseit
Affiliation:
University Observatory Munich, Scheinerstr. 1, 81679 Munich, Germany email: [email protected]
*
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Abstract

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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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

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