Disk galaxy evolution: from the Milky Way to high-redshift disks
Abstract
We develop a detailed model of the Milky Way (a ``prototypical'' disk galaxy) and extend it to other disks with the help of some simple scaling relations, obtained in the framework of Cold Dark Matter models. This phenomenological (``hybrid'') approach to the study of disk galaxy evolution allows us to reproduce successfully a large number of observed properties of disk galaxies in the local Universe and up to redshift z~1. The important conclusion is that, on average, massive disks have formed the bulk of their stars earlier than their lower mass counterparts: the ``star formation hierarchy'' has been apparently opposite to the ``dark matter assembly'' hierarchy. It is not yet clear whether ``feedback'' (as used in semi-analytical models of galaxy evolution) can explain that discrepancy.
Cite
@article{arxiv.astro-ph/0210094,
title = {Disk galaxy evolution: from the Milky Way to high-redshift disks},
author = {N. Prantzos},
journal= {arXiv preprint arXiv:astro-ph/0210094},
year = {2009}
}
Comments
12 pages, 8 figures. Invited talk in "Galaxy Evolution III: From Simple Approaches to Self-Consistent Models" (Kiel, Germany, July 16-20, 2002) Eds. G. Hensler et al., in press