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Article Contents

ABSTRACT

4.1.INTRODUCTORY REMARKS

4.2.INTRODUCTION

4.3.ORBITS AND RESONANCES

4.4.N-BODY SIMULATIONS

4.5.ON ANGULAR MOMENTUM EXCHANGE AND THE ROLE OF RESONANCES: THE ANALYTIC APPROACH

4.6.ON ANGULAR MOMENTUM EXCHANGE AND THE ROLE OF RESONANCES: INPUT FROM SIMULATIONS

4.6.1.General comments

4.6.2.Calculating the orbital frequencies

4.6.3.Material at resonance

4.6.4.Angular momentum exchange

4.6.5.Types of models

4.6.6.Live versus rigid halo

4.6.7.Distribution of frequencies for MD- and MH-type models

4.6.8.Bar strength

4.7.BAR SLOWDOWN

4.7.1.Results from N-body simulations

4.7.2.A schematic view

4.7.3.What sets the pattern speed value?

4.8.BOXY/PEANUT BULGES

4.8.1.Peanuts: input from simulations, orbits and observations

4.8.2.Peanut-related orbital structure

4.8.3.Peanuts as parts of bars: shape and extent

4.8.4.The boxy/peanut system in the Milky Way

4.9.SECULAR EVOLUTION OF THE DISK AND OF ITS SUBSTRUCTURES

4.9.1.Redistribution of the disk mass: formation of the disky bulge

4.9.2.Redistribution of the disk mass: the disk scale-length and extent

4.9.3.Redistribution of the disk mass: maximum versus sub-maximum disks

4.9.4.Secular evolution of the halo component

4.10.COMPARISON WITH OBSERVATIONS

4.11.SUMMARY AND DISCUSSION

REFERENCES