Formation and evolution of bulges

2) ((1) Laboratoire d'Astrophysique de Marseille; (2) Instituto de Astrofisica de Canarias; E. Athanassoula (1); France; I. Martinez-Valpuesta (1; Marseille; Observatoire Astronomique de Marseille Provence; Spain); Tenerife

arxiv: 0710.1518 · v1 · submitted 2007-10-08 · 🌌 astro-ph

Formation and evolution of bulges

E. Athanassoula (1) , I. Martinez-Valpuesta (1 , 2) ((1) Laboratoire d'Astrophysique de Marseille , Observatoire Astronomique de Marseille Provence , Marseille , France , (2) Instituto de Astrofisica de Canarias , Tenerife

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classification 🌌 astro-ph

keywords bulgesformationbulgeevolutionpeanutnamelythreeanisotropy

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After presenting three ways of defining a bulge component in disc galaxies, we introduce the various types of bulges, namely the classical bulges, the boxy/peanut bulges and the disc-like bulges. We then discuss three specific topics linked to bulge formation and evolution, namely the coupled time evolution of the bar, buckling and peanut strengths; the effect of velocity anisotropy on peanut formation; and bulge formation via bar destruction.

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Formation and evolution of bulges

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