Galactic bulges: Overview

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    Abstract

    This overview of galactic bulges begins with a discussion of the various kinds of bulges (classical, boxy/peanut-shaped, pseudo) and their likely formation mechanisms. Other specific topics include the Galactic bar/bulge and its chemical evolution, the bulge of M31, the relation between bulges and metal-poor halos (often lumped together as spheroids), the morphology-density relation and the formation of S0 galaxies, the color-structure bimodality, and scaling laws for bulges. Finally I will briefly discuss the current difficulty of forming bulgeless disk galaxies in CDM.

    Original languageEnglish
    Pages (from-to)3-10
    Number of pages8
    JournalProceedings of the International Astronomical Union
    Volume3
    Issue numberS245
    DOIs
    Publication statusPublished - Jul 2007

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