Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-03T00:54:18.177Z Has data issue: false hasContentIssue false

Disk Sizes in a ΛCDM Universe

Published online by Cambridge University Press:  01 June 2008

Qi Guo
Affiliation:
Max Planck Institut for Astrophysics, Postbus 85741, Garching, Germany email: [email protected]
Simon White
Affiliation:
Max Planck Institut for Astrophysics, Postbus 85741, Garching, Germany email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2009

References

Colless, M., Dalton, G., Maddox, S., & etc. 2001, MNRAS, 328, 1039Google Scholar
Croton, D. J., Springel, V., White, S. D. M., De Lucia, G., Frenk, C. S, Gao, L., Jenkins, A., Kauffmann, G., Navarro, J. F., & Yoshida, N. 2006, MNRAS, 365, 11Google Scholar
De Lucia, G. & Blaizot, J. 2007, MNRAS, 375, 2Google Scholar
Governato, F., Mayer, L., Wadsley, J., Gardner, J. P., Willman, B., Hayashi, E., Quinn, T., Stadel, J., & Lake, GApJ, 607, 688CrossRefGoogle Scholar
Li, C., Kauffmann, G., Jing, Y. P., White, S. D. M., Börner, G., & Cheng, F. Z. 2006, MNRAS, 368, 21Google Scholar
Noordermeer, E., van der Hulst, J. M., Sancisi, R., Swaters, R. A., & van Albada, T. S. 2005, A&A, 442, 137Google Scholar
Shen, S., Mo, H. J., White, S. D. M., Blanton, M. R., Kauffmann, G., Voges, W., Brinkmann, J., & Csabai, I. 2003, MNRAS, 343, 978Google Scholar
Sommer-Larsen, J., Gelato, S., & Vedel, H. 1999, ApJ, 519, 501CrossRefGoogle Scholar
Sommer-Larsen, J. & Dolgov, A. 2001, ApJ, 551, 608Google Scholar
Spergel, D. N., Verde, L., Peiris, H. V., & etc. 2003, ApJS, 148, 175Google Scholar
Springel, V., White, S. D. M., Jenkins, A., Frenk, C. S., & etc. 2005, Nature, 435, 629Google Scholar
Thacker, R. J. & Couchman, H. M. P. 2001, ApJ, 555, 17CrossRefGoogle Scholar