Hostname: page-component-77c89778f8-vsgnj Total loading time: 0 Render date: 2024-07-18T20:38:21.389Z Has data issue: false hasContentIssue false
  • English
  • Français

The Angular Momentum Problem in CDM Cosmolgies: The End of the Beginning?

Published online by Cambridge University Press:  26 May 2016

H.M.P. Couchman  and
R.J. Thacker
H.M.P. Couchman
Affiliation:
Department of Physics & Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1, Canada
R.J. Thacker
Affiliation:
Department of Astronomy, University of California, 601 Campbell Hall, Berkeley, CA 94720, USA

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 show, by adopting a plausible model for star formation and energetic feedback in cosmological simulations of galaxy formation, that we are able to alleviate the angular momentum problem which has bedeviled many previous attempts to generate realistic disc galaxies in Cold Dark Matter cosmogonies. This paper highlights the “cooling catastrophe” as manifest in numerical cosmology and describes a simple prescription for modelling the sub-resolution physics of star formation and feedback in Smoothed Particle Hydrodynamic simulations. We show results for angular momentum and disc scale length for simulations with and without feedback.

Type
Cosmology
Information
Symposium - International Astronomical Union , Volume 208: Astrophysical Supercomputing using Particle Simulations , 2003 , pp. 227 - 236
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Fall, S.M. 1983. in Internal Kinematics and Dynamics of Galaxies, ed. Athanassoula, E. (Dordrecht: Reidel), 391 Google Scholar
Fall, S.M. & Efstathiou, G.P. 1980. MNRAS, 193, 18 CrossRefGoogle Scholar
Fuller, T.M. & Couchman, H.M.P. 2000. ApJ, 544, 6 CrossRefGoogle Scholar
Mo, H.J., Mao, S., & White, S. D. M. 1998. MNRAS, 295, 319 Google Scholar
Navarro, J. & Benz, W. 1991. ApJ, 380, 320 Google Scholar
Navarro, J. & Steinmetz, M. 2000. ApJ, 538, 477 Google Scholar
Rees, M.J. & Ostriker, J.P. 1977. MNRAS, 179, 541 Google Scholar
Thacker, R.J. & Couchman, H.M.P. 2000. ApJ, 545, 728 Google Scholar
Weil, M.L., Eke, V.R. & Efstathiou, G.P. 1998. MNRAS, 300, 773 Google Scholar