Affordable Access

Publisher Website

Disk Sizes in a LCDM Universe

Authors
  • Guo, Qi
  • White, Simon
Type
Preprint
Publication Date
Jul 20, 2008
Submission Date
Jul 18, 2008
Identifiers
DOI: 10.1017/S1743921308027890
Source
arXiv
License
Yellow
External links

Abstract

We introduce a model which uses semi-analytic techniques to trace formation and evolution of galaxy disks in their cosmological context. For the first time we model the growth of gas and stellar disks separately. In contrast to previous work we follow in detail the angular momentum accumulation history through the gas cooling, merging and star formation processes. Our model successfully reproduces the stellar mass--radius distribution and gas-to-stellar disk size ratio distribution observed locally. We also investigate the dependence of clustering on galaxy size and find qualitative agreement with observation. There is still some discrepancy at small scale for less massive galaxies, indicating that our treatment of satellite galaxies needs to be improved.

Report this publication

Statistics

Seen <100 times