Galactic bulges: overview
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 ΛCDM.
- Publication:
-
Formation and Evolution of Galaxy Bulges
- Pub Date:
- July 2008
- DOI:
- 10.1017/S1743921308017146
- Bibcode:
- 2008IAUS..245....3F
- Keywords:
-
- Galaxy: bulge;
- Galaxy: halo;
- Galaxy: kinematics and dynamics;
- galaxies: bulges;
- galaxies: formation;
- galaxies: evolution;
- galaxies: Magellanic Clouds;
- galaxies: structure