Mergers between elliptical galaxies and the thickening of the fundamental plane

A. C. Gonzalez-Garcia; T. S. van Albada

doi:10.1046/j.1365-8711.2003.06746.x

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arXiv · astro-ph/0304436

Mergers between elliptical galaxies and the thickening of the fundamental plane

A. C. Gonzalez-Garcia·T. S. van Albada

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Abstract

We have carried out computer simulations to study the effect of merging on the fundamental plane (FP) relation. Initially, systems are spherical Jaffe models following a simple scaling relation (M/R_e^2 = constant). They have been put on the FP by imposing different M/L values. Various orbital characteristics have been considered. Our results show that the merger remnants lie very close to the FP of the progenitors. Although non-homology is introduced by the merging process, mergers among homologous galaxies leave a pre-existing FP-relation intact. As a side result we find that variations in the point of view lead to non-negligible scatter about the FP.

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A. C. Gonzalez-Garcia, T. S. van Albada. 2003-04-24. Mergers between elliptical galaxies and the thickening of the fundamental plane. https://doi.org/10.1046/j.1365-8711.2003.06746.x

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