Formation of Bulges
arXiv:astro-ph/9812057 · doi:10.1023/A:1002117507294
Abstract
Bulges, often identified with the spheroidal component of a galaxy, have a complex pedigree. Massive bulges are generally red and old, but lower mass bulges have broader dispersions in color that may be correlated with disk colors. This suggests different formation scenarios. I will review possible formation sequences for bulges, describe the various signatures that distinguish these scenarios, and discuss implications for the high redshift universe.
10 pages, 3 figures. To appear in the proceedings of the `Galaxy Evolution' conference held in Meudon, September, 21 - 25, 1998