Are violent events responsible of a Galaxy Morphological loop?

Details Are violent events responsible of a Galaxy Morphological loop? Are violent events responsible of a Galaxy Morphological loop?

2005-03-31

arxiv.org/abs/astro-ph/0503701v1

Astronomy and Astrophysics

Astrophysics

2 pages. To appear in the proceedings of the IAUC198 "Near-Field Cosmology with Dwarf Elliptical Galaxies", 14 - 18 March 2005

Scientific paper

10.1017/S174392130500387X

We use cosmological SPH simulations to investigate the effects of mergers and interactions on the formation of the bulge and disc components of galactic systems. We find that secular evolution during mergers seems to be a key process in the formation of stable disc-bulge systems with observational counterparts and contributes to establish the fundamental relations observed in galaxies. Our findings suggest that the secular evolution phase couples the formation mechanisms of the bulge and disc components. According to our results, depending on the particular stability properties and merger parameters, violents events could drive a morphological loop in which the outcome could be a disc or a spheroid.

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